List of Key video games explained
Key is a Japanese visual novel video game development studio and brand under the publisher Visual Arts. The video games developed by Key are initially published by Visual Arts and released for Windows; consumer ports are published by Interchannel and Prototype. Key released their debut title, Kanon, in 1999, followed by their second title, Air, in 2000. Both Kanon and Air were initially released as adult games, but Key released their third game, Clannad, in 2004 with a rating of approval for all ages. Key's fourth game, , was also released in 2004 with a rating for all ages, and is described as a "kinetic novel" by the development team because of its completely linear storyline.
Key's fifth game, , was released in 2005 as an adult game and spin-off from Clannad; it expanded on the scenario of the heroine Tomoyo Sakagami. Key released their sixth visual novel, Little Busters!, in 2007 with a rating for all ages. Key's seventh title, Little Busters! Ecstasy, was an expanded, adult version of Little Busters! released in 2008. Key's eighth game, Kud Wafter, was released in 2010 as an adult game and spin-off from Little Busters! Ecstasy; it expanded on the scenario of the heroine Kudryavka Noumi. Key released their ninth game Rewrite in 2011 with a rating for all ages. Key released a fan disc of Rewrite titled Rewrite Harvest festa! in 2012.
Key's 11th game Angel Beats! 1st Beat was released in 2015. Key released the kinetic novel Harmonia in 2016.[1] Key's 13th game Summer Pockets was released in 2018, and an expanded version titled Summer Pockets Reflection Blue was released in 2020. Three kinetic novels were released in 2021: Loopers, Planetarian: Snow Globe and . Another kinetic novel, Stella of The End, followed in 2022.[2] A four-volume kinetic novel series for the Prima Doll multimedia project will be released between 2023 and 2024.
As of September 2022, 62 versions of Key's 18 released visual novels have been published by VisualArt's. Of the 62, 11 were released with an adult rating, and the remaining 51 had a rating for all ages. VisualArt's has ceased manufacturing 40 versions of Key's 18 games. Key released a box set called "Key 10th Memorial Box" in July 2009 containing six of Key's visual novels with a rating for all ages.[3] [4] The availability of Key 10th Memorial Box was restricted to ordering online. Key released "memorial editions" of their first five games in April and May 2010 with ratings for all ages.[5] [6]
Visual novel list
Windows
Visual novel release historyTitle | Version | Release date | Rating | Status | |
---|
Kanon | Kanon (limited edition) | [7] | Adult | | |
Kanon (regular edition) | | Adult | | |
Kanon (all ages edition) | | All ages | | |
Kanon Standard Edition | | Adult | | |
Kanon Standard Edition | | All ages | | |
Kanon | | All ages | | |
Kanon (all ages memorial edition) | | All ages | | |
Air | Air (limited edition) | [8] | Adult | | |
Air (regular edition) | | Adult | | |
Air (all ages edition) | | All ages | | |
Air Standard Edition | | Adult | | |
Air | | All ages | | |
Air (all ages memorial edition) | | All ages | | |
Clannad | Clannad (limited edition) | [9] | All ages | | |
Clannad (regular edition) | | All ages | | |
Clannad Full Voice | [10] | All ages | | |
Clannad | | All ages | | |
Clannad (all ages memorial edition) | | All ages | | [11] |
| Planetarian: The Reverie of a Little Planet (Kinetic Novel edition) | [12] | All ages | | |
Planetarian: The Reverie of a Little Planet (package limited edition) | [13] | All ages | | |
Planetarian: The Reverie of a Little Planet (package regular edition) | [14] | All ages | | |
Planetarian: The Reverie of a Little Planet | | All ages | | |
Planetarian: The Reverie of a Little Planet (all ages memorial edition) | | All ages | | [15] |
Planetarian: The Reverie of a Little Planet (English edition) | [16] | All ages | | |
Planetarian: The Reverie of a Little Planet (HD edition) | [17] | All ages | | [18] |
Planetarian Ultimate Edition | [19] | All ages | | |
| Tomoyo After: It's a Wonderful Life (limited edition) | [20] | Adult | | |
Tomoyo After: It's a Wonderful Life | | All ages | | |
Tomoyo After: It's a Wonderful Life (all ages memorial edition) | | All ages | | [21] |
Tomoyo After: It's a Wonderful Life Perfect Edition | [22] | Adult | | |
Little Busters! | Little Busters! (limited edition) | [23] | All ages | | |
Little Busters! (regular edition) | [24] | All ages | | |
Little Busters! Ecstasy | Little Busters! Ecstasy (limited edition) | [25] | Adult | | |
Little Busters! Ecstasy (regular edition) | | Adult | | |
Little Busters! Ecstasy | | All ages | | |
Little Busters! Perfect Edition | [26] | All ages | | [27] |
Kud Wafter | Kud Wafter | [28] | Adult | | |
Kud Wafter (all ages edition) | [29] | All ages | | |
Rewrite | Rewrite (limited edition) | [30] | All ages | | |
Rewrite (regular edition) | [31] | All ages | | |
Rewrite+ | [32] | All ages | | [33] |
Rewrite Harvest festa! | Rewrite Harvest festa! | [34] | 15+ | | |
Angel Beats! 1st Beat | Angel Beats! 1st Beat | [35] | All ages | | |
Harmonia | Harmonia (English edition) | | All ages | | [36] |
Harmonia (Japanese edition) | [37] | All ages | | |
Harmonia (limited edition) | [38] | All ages | | |
Harmonia (regular edition) | [39] | All ages | | |
Summer Pockets | Summer Pockets (limited edition) | [40] | All ages | | |
Summer Pockets (regular edition) | [41] | All ages | | [42] |
Summer Pockets Reflection Blue | Summer Pockets Reflection Blue (limited edition) | [43] | All ages | | |
Summer Pockets Reflection Blue (special edition) | | All ages | | |
Loopers | Loopers (download edition) | [44] | All ages | | [45] |
Loopers (limited edition) | | All ages | | |
Loopers (special edition) | | All ages | | |
Planetarian: Snow Globe | Planetarian: Snow Globe (download edition) | | All ages | | |
Planetarian: Snow Globe (package edition) | | All ages | | |
| Lunaria: Virtualized Moonchild (download edition) | [46] | All ages | | |
Lunaria: Virtualized Moonchild (limited edition) | | All ages | | |
Lunaria: Virtualized Moonchild (special edition) | | All ages | | |
Stella of The End | Stella of The End (download edition) | [47] | All ages | | [48] |
Stella of The End (limited edition) | | All ages | | |
Stella of The End (special edition) | | All ages | | |
Prima Doll | Prima Doll: Fuyuzora Hanabi / Sekka Monyō | [49] | All ages | | |
Prima Doll: Mumei Tenrei | [50] | All ages | | |
Prima Doll: Kōto Tantei | | All ages | | |
Prima Doll Encore | | All ages | | | |
Consumer ports
Notes and References
- Web site: Harmonia Official Website Is Now Open!. Key. September 15, 2016. September 15, 2016. Japanese. September 16, 2016. https://web.archive.org/web/20160916204538/http://key.visualarts.gr.jp/info/2016/09/harmonia_official_website_is_n.html. live.
- Web site: 終のステラ ティザーサイト. January 5, 2022. Key. ja. May 13, 2022. https://web.archive.org/web/20220513114733/https://key.visualarts.gr.jp/kinetic/stella/. live.
- Web site: Key 10th Memorial Box official website. Key. May 16, 2009. Japanese. October 19, 2012. https://web.archive.org/web/20121019184718/http://key.visualarts.gr.jp/10thfes/memorialbox.htm. live.
- Web site: Key 10th Memorial Box. VisualArt's. October 6, 2017. Japanese. June 30, 2018. https://web.archive.org/web/20180630052926/http://www.product.co.jp/products/item/657/. live.
- Web site: http://key.visualarts.gr.jp/info/2010/04/post_73.html. ja:Keyの過去五作品がメモリアルエディションで発売です!. Key's Previous Five Titles Get Memorial Editions!. Key. April 7, 2010. April 8, 2010. Japanese. April 10, 2010. https://web.archive.org/web/20100410213035/http://key.visualarts.gr.jp/info/2010/04/post_73.html. live.
- Web site: http://key.visualarts.gr.jp/product/key_memorial/. ja:Key メモリアルエディション全年齢対象版 Key Official HomePage. Key All Ages Memorial Edition Key Official HomePage. Key. April 30, 2010. Japanese. April 21, 2012. https://web.archive.org/web/20120421005018/http://key.visualarts.gr.jp/product/key_memorial/. live.
- Web site: Kanon. Key. May 16, 2009. Japanese. December 9, 2016. https://web.archive.org/web/20161209013058/http://key.visualarts.gr.jp/product/kanon/. live.
- Web site: Air. Key. May 16, 2009. Japanese. June 28, 2009. https://web.archive.org/web/20090628121958/http://key.visualarts.gr.jp/product/air/. live.
- Web site: Clannad. Key. May 16, 2009. Japanese. September 15, 2012. https://web.archive.org/web/20120915161429/http://key.visualarts.gr.jp/product/clannad/. live.
- Web site: Clannad Full Voice. VisualArt's. May 17, 2009. Japanese. January 24, 2018. https://web.archive.org/web/20180124195709/http://www.product.co.jp/products/item/128/. live.
- Web site: Clannad Visual Novel Set for November 23 Release Date. Anime News Network. November 13, 2015. November 13, 2015. https://web.archive.org/web/20151114084959/http://www.animenewsnetwork.com/news/2015-11-13/clannad-visual-novel-set-for-november-23-release-date/.95373. November 14, 2015. live. mdy-all.
- Web site: Planetarian. Key. May 16, 2009. Japanese. January 4, 2007. https://web.archive.org/web/20070104224128/http://key.visualarts.gr.jp/product/planetarian/. live.
- Web site: http://www.product.co.jp/products/item/163/. ja:planetarian ~ちいさなほしのゆめ~ パッケージ版 初回版. Planetarian: The Reverie of a Little Planet Package Limited Edition. VisualArt's. March 22, 2012. Japanese. January 29, 2019. https://web.archive.org/web/20190129181515/http://www.product.co.jp/products/item/163/. live.
- Web site: http://www.product.co.jp/products/item/164/. ja:planetarian ~ちいさなほしのゆめ~ パッケージ版 通常版. Planetarian: The Reverie of a Little Planet Package Regular Edition. VisualArt's. March 22, 2012. Japanese. January 29, 2019. https://web.archive.org/web/20190129181518/http://www.product.co.jp/products/item/164/. live.
- Web site: Planetarian Steam Launch Set for September. Hardcore Gamer. August 18, 2014. September 11, 2014. May 17, 2021. https://web.archive.org/web/20210517125126/https://hardcoregamer.com/2014/08/18/planetarian-steam-launch-set-for-september/99540/. live.
- Web site: Comiket Special 6 - Otaku Summit. Key. October 13, 2020. Japanese. October 4, 2020. https://web.archive.org/web/20201004205744/http://key.visualarts.gr.jp/event/cs6/. live.
- Web site: http://key.visualarts.gr.jp/product/planetarian/hd_edition/. ja:planetarian HDエディション. Key. June 21, 2016. Japanese. November 1, 2020. https://web.archive.org/web/20201101165005/https://key.visualarts.gr.jp/product/planetarian/hd_edition/. live.
- Web site: planetarian HD. Valve Corporation. September 20, 2022. September 20, 2022. https://web.archive.org/web/20220920194201/https://store.steampowered.com/app/623080/planetarian_HD/. live.
- Web site: 「planetarian -雪圏球-」が初のキネティックノベル化! 「planetarian Ultimate Edition」本日発売. Impress Corporation. September 3, 2021. February 5, 2022. ja. February 5, 2022. https://web.archive.org/web/20220205235616/https://game.watch.impress.co.jp/docs/news/1347980.html. live.
- Web site: http://key.visualarts.gr.jp/product/tomoyo/. ja:智代アフター. Tomoyo After. Key. May 16, 2009. Japanese. October 25, 2012. https://web.archive.org/web/20121025131827/http://key.visualarts.gr.jp/product/tomoyo/. live.
- Web site: Tomoyo After ~It's a Wonderful Life~ Game's English Opening Streamed. Anime News Network. April 8, 2016. April 8, 2016. April 9, 2016. https://web.archive.org/web/20160409102050/http://www.animenewsnetwork.com/news/2016-04-08/tomoyo-after-~its-a-wonderful-life~-game-english-opening-streamed/.100831. live.
- Web site: http://key.visualarts.gr.jp/product/tomoyo/pe/contents.html. ja:智代アフター ~It's a Wonderful Life~ Perfect Edition. Tomoyo After: It's a Wonderful Life Perfect Edition. Key. July 24, 2014. Japanese. December 3, 2020. https://web.archive.org/web/20201203075941/https://key.visualarts.gr.jp/product/tomoyo/pe/contents.html. live.
- Web site: http://www.product.co.jp/products/item/127/. ja:リトルバスターズ! 初回限定版. Little Busters! Limited Edition. VisualArt's. May 16, 2009. Japanese. January 19, 2019. https://web.archive.org/web/20190119120916/http://www.product.co.jp/products/item/127/. live.
- Web site: http://www.product.co.jp/products/item/166/. ja:リトルバスターズ! 通常版. Little Busters! Regular Edition. VisualArt's. May 16, 2009. Japanese. October 2, 2020. https://web.archive.org/web/20201002181540/http://www.product.co.jp/products/item/166/. live.
- Web site: http://key.visualarts.gr.jp/product/little_ex/. ja:リトルバスターズ! エクスタシー. Little Busters! Ecstasy. Key. May 16, 2009. Japanese. August 15, 2012. https://web.archive.org/web/20120815030054/http://key.visualarts.gr.jp/product/little_ex/. live.
- Web site: http://www.product.co.jp/products/item/881/. ja:リトルバスターズ!パーフェクトエディション TVアニメ記念版. Little Busters! Perfect Edition TV Anime Commemoration Edition. VisualArt's. October 12, 2012. Japanese. December 1, 2020. https://web.archive.org/web/20201201045312/http://www.product.co.jp/products/item/881/. live.
- News: Little Busters! Visual Novel's English Release Slated for November 1. Anime News Network. October 11, 2017. October 11, 2017. April 20, 2021. https://web.archive.org/web/20210420172126/https://www.animenewsnetwork.com/daily-briefs/2017-10-11/little-busters-visual-novel-english-release-slated-for-november-1/.122548. live.
- Web site: http://www.product.co.jp/products/item/786/. ja:クドわふたー. Kud Wafter. VisualArt's. April 6, 2010. Japanese. September 24, 2015. https://web.archive.org/web/20150924082311/http://www.product.co.jp/products/item/786/. live.
- Web site: http://key.visualarts.gr.jp/kudo/spec.html. ja:クドわふたー【全年齢版】 Spec. Kud Wafter (all ages edition) Spec. Key. March 15, 2013. Japanese. October 2, 2012. https://web.archive.org/web/20121002061031/http://key.visualarts.gr.jp/kudo/spec.html. live.
- Web site: Rewrite. VisualArt's. June 4, 2010. Japanese. September 24, 2015. https://web.archive.org/web/20150924082306/http://www.product.co.jp/products/item/732/. live.
- Web site: Rewrite 通常版. Rewrite Regular Edition. VisualArt's. October 2, 2011. Japanese. March 25, 2020. https://web.archive.org/web/20200325165122/http://www.product.co.jp/products/item/819/. live.
- Web site: VisualArt's/Key Reveals Rewrite+ Visual Novel. Anime News Network. April 8, 2016. April 8, 2016. April 16, 2016. https://web.archive.org/web/20160416140118/http://www.animenewsnetwork.com/news/2016-04-08/visualart-key-reveals-rewrite-visual-novel/.100832. live.
- Web site: Rewrite+. Valve Corporation. December 29, 2021. December 30, 2021. https://web.archive.org/web/20211230004154/https://store.steampowered.com/app/1680000/Rewrite/. live.
- Web site: Rewrite Harvest festa!. VisualArt's. May 11, 2012. Japanese. September 24, 2015. https://web.archive.org/web/20150924082322/http://www.product.co.jp/products/item/866/. live.
- Web site: Products. Key. December 26, 2013. Japanese. July 28, 2015. https://web.archive.org/web/20150728072226/http://key.visualarts.gr.jp/angelbeats/products.html. live.
- News: http://chicagoshimpo.com/e-community/16_0610_VisualArts_J.htm. https://web.archive.org/web/20160803031211/https://chicagoshimpo.com/e-community/16_0610_VisualArts_J.htm. 2016-08-03. ja:ファンタジー・ノベルの世界 インタビュー:馬場隆博さん、折戸伸治ん. Fantasy Novel World Interview: Takahiro Baba, Shinji Orito. Chicago Shimpo. February 23, 2021. ja.
- Web site: http://key.visualarts.gr.jp/info/2016/11/harmonia.html. ja:「Harmonia」日本語版発売決定!!. Key. November 10, 2016. November 10, 2016. Japanese. November 8, 2017. https://web.archive.org/web/20171108095512/http://key.visualarts.gr.jp/info/2016/11/harmonia.html. live.
- Web site: https://www.4gamer.net/games/372/G037278/20170227082/. ja:「Harmonia」日本語パッケージ版の発売日が5月26日に決定。オリジナルサントラや書き下ろし小説付き小冊子など,特典付きの初回限定版を用意. 4Gamer. March 16, 2017. February 8, 2022. ja. February 9, 2022. https://web.archive.org/web/20220209004749/https://www.4gamer.net/games/372/G037278/20170227082/. live.
- Web site: http://key.visualarts.gr.jp/info/2019/03/426harmonia322.html. ja:4月26日『Harmonia』通常版が発売決定!3月22日より予約受付開始!. Key. February 8, 2022. ja. February 9, 2022. https://web.archive.org/web/20220209004750/http://key.visualarts.gr.jp/info/2019/03/426harmonia322.html. live.
- Web site: http://key.visualarts.gr.jp/summer/spec.html. ja:Summer Pockets -サマーポケッツ- (サマポケ) オフィシャルサイト Spec. Key. December 26, 2017. Japanese. July 22, 2020. https://web.archive.org/web/20200722161114/http://key.visualarts.gr.jp/summer/spec.html. live.
- Web site: https://www.amazon.co.jp/dp/B07TW57RVZ/. ja:Summer Pockets 通常版. Amazon.com. February 8, 2022. ja. February 24, 2022. https://web.archive.org/web/20220224212210/https://www.amazon.co.jp/dp/B07TW57RVZ/. live.
- Web site: Summer Pockets Visual Novel's English Version Delayed to Early 2020. Anime News Network. December 23, 2019. January 10, 2020. December 24, 2019. https://web.archive.org/web/20191224040643/https://www.animenewsnetwork.com/daily-briefs/2019-12-23/summer-pockets-visual-novel-english-version-delayed-to-early-2020/.154705. live.
- Web site: Summer Pockets Reflection Blue ! Spec. Key. February 1, 2020. Japanese. December 1, 2021. https://web.archive.org/web/20211201103436/https://key.visualarts.gr.jp/summer_rb/spec.html. live.
- Web site: Shopping Guide. Key. January 14, 2021. January 14, 2021. ja. June 5, 2021. https://web.archive.org/web/20210605134617/https://key.visualarts.gr.jp/kinetic/loopers/guide.html. live.
- Web site: Ryukishi07 Visual Novel 'Loopers' Comes to Steam Later This Month. Noisy Pixel. June 16, 2023. June 20, 2023. June 20, 2023. https://web.archive.org/web/20230620210846/https://noisypixel.net/loopers-steam-release-date-english/. live.
- Web site: Shopping Guide. Key. January 1, 2022. ja. February 20, 2022. https://web.archive.org/web/20220220094515/https://key.visualarts.gr.jp/kinetic/lunaria/#shopping_guide. live.
- Web site: Shopping Guide. Key. May 13, 2022. ja. May 13, 2022. https://web.archive.org/web/20220513114733/https://key.visualarts.gr.jp/kinetic/stella/#shopping. live.
- Web site: Key's Stella of the End Kinetic Novel Releases in English on September 25. Anime News Network. September 22, 2023. October 20, 2023. November 24, 2023. https://web.archive.org/web/20231124181834/https://www.animenewsnetwork.com/news/2023-09-22/key-stella-of-the-end-kinetic-novel-releases-in-english-on-september-25/.202646. live.
- Web site: Key開発日誌(折戸). Key. April 26, 2023. May 3, 2023. ja. May 6, 2023. https://web.archive.org/web/20230506080001/https://key.visualarts.gr.jp/archives/5046. live.
- Web site: Kinetic Novel. Key/Visual Arts. September 23, 2022. ja. September 24, 2022. https://web.archive.org/web/20220924020554/https://primadoll.jp/kineticnovel.html. live.
- Web site: Kanon. Android Market. December 10, 2011. Japanese. March 5, 2012. https://web.archive.org/web/20120305064606/https://market.android.com/details?id=jp.co.prot.kanon. live.
- Web site: Kanon Dreamcast product listing. Amazon.co.jp. May 23, 2009. Japanese. December 1, 2016. https://web.archive.org/web/20161201034917/https://www.amazon.co.jp/dp/B00006LJFY/. live.
- Web site: http://key.visualarts.gr.jp/info/2010/11/foma.html. ja:FOMA 横アプリ『Kanon』配信開始!!. Key. June 21, 2016. Japanese. January 25, 2018. https://web.archive.org/web/20180125015225/http://key.visualarts.gr.jp/info/2010/11/foma.html. live.
- Web site: http://key.visualarts.gr.jp/info/2013/04/iphoneipadkanon.html. ja:iPhone&iPad用『Kanon 全年齢対象版』発売開始!. Kanon All Ages Edition for iPhone & iPad Goes on Sale Today!. Key. April 4, 2013. Japanese. December 2, 2020. https://web.archive.org/web/20201202064152/http://key.visualarts.gr.jp/info/2013/04/iphoneipadkanon.html. live.
- Web site: https://web.archive.org/web/20070108204822/http://www.interchannel.co.jp/gamesoft/g99905083021.html. Kanon PS2 official product listing. Interchannel. January 8, 2007. June 6, 2010. Japanese.
- Web site: Kanon PSP official product listing. Prototype. May 23, 2009. Japanese. November 1, 2018. https://web.archive.org/web/20181101015350/https://www.prot.co.jp/psp/kanon/index.html. live.
- Web site: http://game.watch.impress.co.jp/docs/20061101/motto.htm. ja:プロトタイプ、恋愛AVG2タイトルが携帯に登場 iモード「SNOW」、Yahoo! ケータイ「Kanon」. Impress Watch Corporation. November 1, 2006. June 21, 2016. Japanese. January 25, 2018. https://web.archive.org/web/20180125134547/https://game.watch.impress.co.jp/docs/20061101/motto.htm. live.
- Web site: Romance visual novel Kanon coming to Switch in spring 2023 in Japan. Gematsu. December 21, 2022. December 23, 2022. December 22, 2022. https://web.archive.org/web/20221222121436/https://www.gematsu.com/2022/12/romance-visual-novel-kanon-coming-to-switch-in-spring-2023-in-japan. live.
- Web site: http://news.mynavi.jp/news/2012/10/25/093/. ja:ビジュアルアーツ、Android版『AIR』の一括ダウンロード版を配信開始. An All Together Download Edition of Air on Android Starts Distribution from VisualArt's. Mynavi. October 25, 2012. October 25, 2012. Japanese. March 5, 2016. https://web.archive.org/web/20160305020124/http://news.mynavi.jp/news/2012/10/25/093/. live.
- Web site: Air Dreamcast product listing. Amazon.co.jp. May 23, 2009. Japanese. October 18, 2019. https://web.archive.org/web/20191018004402/https://www.amazon.co.jp/dp/B00006LJG4. live.
- Web site: http://key.visualarts.gr.jp/info/2008/02/fomavgaair.html. ja:FOMAにてVGA版「AIR」配信開始です。. Key. June 21, 2016. Japanese. April 3, 2012. https://web.archive.org/web/20120403005712/http://key.visualarts.gr.jp/info/2008/02/fomavgaair.html. live.
- Web site: http://key.visualarts.gr.jp/info/2013/05/air_iosair_18android.html. ja:『AIR 全年齢版』がiOSで『AIR 18禁版』がAndroidで登場!. Air All Ages Edition is on iOS and Air 18+ Edition is on Android!. Key. May 2, 2013. May 3, 2013. Japanese. June 5, 2013. https://web.archive.org/web/20130605185254/http://key.visualarts.gr.jp/info/2013/05/air_iosair_18android.html. live.
- Web site: https://web.archive.org/web/20070125010459/http://www.interchannel.co.jp/gamesoft/g99905083063.html . Air PS2 official product listing . . January 25, 2007 . June 6, 2010 . Japanese . dead .
- Web site: Air PSP official product listing. Prototype. May 23, 2009. Japanese. November 18, 2014. https://web.archive.org/web/20141118174849/http://www.prot.co.jp/psp/air/index.html. live.
- Web site: Air. Prototype. May 3, 2016. Japanese. May 3, 2016. https://web.archive.org/web/20160503110146/http://www.prot.co.jp/psv/air/index.html. live.
- Web site: Air. Prototype. February 10, 2012. Japanese. September 7, 2014. https://web.archive.org/web/20140907201345/http://www.prot.co.jp/voda/air/index.html. live.
- Web site: Romance visual novel AIR coming to Switch this summer in Japan. Gematsu. June 9, 2021. June 9, 2021. https://web.archive.org/web/20210609065245/https://www.gematsu.com/2021/06/romance-visual-novel-air-coming-to-switch-this-summer-in-japan. live.
- Web site: http://news.dengeki.com/elem/000/000/535/535290/. ja:Android版『CLANNAD』が本日配信開始! フルボイス+高解像度で感動ストーリーが楽しめる. Android Version of Clannad Starts Distribution Today! Enjoy an Emotional Story with Full Voice + High Resolution. ASCII Media Works. September 18, 2012. September 19, 2012. Japanese. December 5, 2012. https://web.archive.org/web/20121205202526/http://news.dengeki.com/elem/000/000/535/535290/. live.
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- Web site: https://web.archive.org/web/20070226080948/http://www.interchannel.co.jp/gamesoft/g99905083073.html . Clannad PS2 official product listing . . February 26, 2007 . June 6, 2010 . Japanese . dead .
- Web site: http://www.famitsu.com/game/coming/1233423_1407.html. ja:ついにPS3に移植決定!『CLANNAD -クラナド-』. Finally the Decision to Port to the PS3! Clannad. Famitsu. April 3, 2010. April 6, 2010. Japanese. December 4, 2020. https://web.archive.org/web/20201204000647/https://www.famitsu.com/game/coming/1233423_1407.html. live.
- Web site: PS4 Clannad. Prototype. March 23, 2018. Japanese. March 24, 2018. https://web.archive.org/web/20180324102044/http://prot.co.jp/ps4/clannad/index.html. live.
- Web site: Clannad PSP official product listing. Prototype. May 23, 2009. Japanese. December 16, 2008. https://web.archive.org/web/20081216080517/http://www.prot.co.jp/psp/clannad/index.html. live.
- Web site: Clannad Spec. Prototype. August 1, 2014. Japanese. August 10, 2014. https://web.archive.org/web/20140810201612/http://www.prot.co.jp/psv/clannad/spec.html. live.
- Web site: http://key.visualarts.gr.jp/info/2008/01/softbank.html. ja:softbank版「CLANNAD」配信中です. Softbank Edition of Clannad Currently in Distribution. Key. January 25, 2008. January 25, 2008. Japanese. June 17, 2018. https://web.archive.org/web/20180617015426/http://key.visualarts.gr.jp/info/2008/01/softbank.html. live.
- Web site: Clannad Visual Novel's Switch Version Launches on July 4. Anime News Network. March 14, 2019. March 18, 2019. March 31, 2019. https://web.archive.org/web/20190331005021/https://www.animenewsnetwork.com/daily-briefs/2019-03-14/clannad-visual-novel-switch-version-launches-on-july-4/.144553. live.
- Web site: Clannad Xbox 360 official product listing. Prototype. May 23, 2009. Japanese. December 16, 2008. https://web.archive.org/web/20081216142105/http://www.prot.co.jp/xbox/clannad/index.html. live.
- Web site: https://market.android.com/details?id=jp.co.prot.planetarian. ja:Planetarian~ちいさなほしのゆめ~. Planetarian: The Reverie of a Little Planet. Android Market. February 10, 2012. Japanese. March 3, 2012. https://web.archive.org/web/20120303024607/https://market.android.com/details?id=jp.co.prot.planetarian. live.
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- Web site: http://www.product.co.jp/products/item/833/. ja:planetarian ~ちいさなほしのゆめ~ iPhone/iPad版. Planetarian: The Reverie of a Little Planet iPhone/iPad edition. VisualArt's. November 30, 2014. Japanese. January 29, 2019. https://web.archive.org/web/20190129181716/http://www.product.co.jp/products/item/833/. live.
- Web site: Planetarian PS2 official product listing. Prototype. May 23, 2009. Japanese. June 4, 2012. https://web.archive.org/web/20120604053335/http://www.prot.co.jp/ps2/planetarian/index.html. live.
- Web site: Planetarian PSP official product listing. Prototype. May 23, 2009. Japanese. July 12, 2012. https://web.archive.org/web/20120712204101/http://prot.co.jp/psp/planetarian/index.html. live.
- Web site: https://web.archive.org/web/20080319001414/http://motto.product.co.jp/appli.htm. 「アプリ」配信リスト. Visual Arts. March 19, 2008. February 12, 2022. ja.
- Web site: https://www.prot.co.jp/switch/planetarian/spec.html. ja:製品情報. Prototype. March 1, 2019. Japanese. February 27, 2019. https://web.archive.org/web/20190227182010/https://www.prot.co.jp/switch/planetarian/spec.html. live.
- Web site: http://www.4gamer.net/games/205/G020502/20130227095/. ja:「智代アフター~It's a Wonderful Life~」,完全フルボイスでAndroidに登場. Tomoyo After: It's a Wonderful Life is Introduced on Android Completely Voiced. Aetas. 4Gamer. February 27, 2013. February 27, 2013. Japanese. March 29, 2019. https://web.archive.org/web/20190329230416/https://www.4gamer.net/games/205/G020502/20130227095/. live.
- Web site: http://news.dengeki.com/elem/000/000/083/83115/index.html. ja:FOMA専用アプリ『智代アフター』が本日から配信スタート!. FOMA Exclusive Application Tomoyo After Distribution From Today!. ASCII Media Works. May 29, 2008. May 30, 2008. Japanese. September 29, 2012. https://web.archive.org/web/20120929104842/http://news.dengeki.com/elem/000/000/083/83115/index.html. live.
- Web site: Tomoyo After PS2 official product listing. Prototype. May 23, 2009. Japanese. September 27, 2020. https://web.archive.org/web/20200927111727/https://www.prot.co.jp/ps2/tomoyoafter/index.html. live.
- Web site: 智代アフター~It's a Wonderful Life~CS Edition. Tomoyo After: It's a Wonderful Life CS Edition. Prototype. July 5, 2012. Japanese. December 17, 2012. https://web.archive.org/web/20121217040534/http://www.prot.co.jp/ps3/tomoyo/index.html. live.
- Web site: Tomoyo After PSP official product listing. Prototype. May 23, 2009. Japanese. July 12, 2012. https://web.archive.org/web/20120712204106/http://prot.co.jp/psp/tomoyoafter/index.html. live.
- Web site: Tomoyo After: It's a Wonderful Life CS Edition coming to Switch on September 10 in Japan. Gematsu. June 24, 2020. June 25, 2020. June 24, 2020. https://web.archive.org/web/20200624065046/https://www.gematsu.com/2020/06/tomoyo-after-its-a-wonderful-life-cs-edition-coming-to-switch-on-september-10-in-japan. live.
- Web site: Prototype. ja:智代アフター~It's a Wonderful Life~CS Edition. Tomoyo After: It's a Wonderful Life CS Edition. Prototype. September 30, 2010. Japanese. September 14, 2012. https://web.archive.org/web/20120914063739/http://www.prot.co.jp/xbox/tomoyoafter/index.html. live.
- Web site: Prototype. ja:リトルバスターズ! Converted Edition. Little Busters! Converted Edition. Prototype. November 19, 2009. Japanese. May 10, 2012. https://web.archive.org/web/20120510175406/http://www.prot.co.jp/ps2/lbc/index.html. live.
- Web site: http://www.prot.co.jp/ps3/lbc/spec.html. ja:リトルバスターズ! Converted Edition Spec. Little Busters! Converted Edition Spec. Prototype. March 4, 2013. Japanese. July 27, 2016. https://web.archive.org/web/20160727222946/http://www.prot.co.jp/ps3/lbc/spec.html. live.
- Web site: Prototype. ja:リトルバスターズ! Converted Edition. Little Busters! Concerted Edition. Prototype. September 30, 2010. Japanese. May 11, 2012. https://web.archive.org/web/20120511013750/http://prot.co.jp/psp/lbc/index.html. live.
- Web site: Prototype. ja:リトルバスターズ!Converted Edition. Little Busters! Converted Edition. Prototype. March 21, 2012. Japanese. August 29, 2012. https://web.archive.org/web/20120829084339/http://www.prot.co.jp/psv/lbc/index.html. live.
- Web site: Little Busters! Converted Edition Will Seek the Truth of the World On Nintendo Switch With English Subs. Siliconera. December 25, 2019. December 26, 2019. December 26, 2019. https://web.archive.org/web/20191226115740/https://www.siliconera.com/little-busters-converted-edition-will-seek-the-truth-of-the-world-on-nintendo-switch-with-english-subs/. live.
- Web site: http://vamarket.jp/main/game/22/. ja:クドわふたー. Kud Wafter. VisualArt's. February 2, 2013. ja. February 14, 2014. https://web.archive.org/web/20140214173155/http://vamarket.jp/main/game/22/. live.
- Web site: http://www.prot.co.jp/psp/kudwafter/spec.html. ja:クドわふたー Converted Edition Spec. Kud Wafter Converted Edition Spec. Prototype. April 25, 2013. Japanese. May 15, 2020. https://web.archive.org/web/20200515121303/https://www.prot.co.jp/psp/kudwafter/spec.html. live.
- Web site: http://dengekionline.com/elem/000/000/716/716700/. ja:PS Vitaの新作『クドわふたー Converted Edition』が発表――TGSプロトタイプブースではハズレなしの抽選会を開催!. Kud Wafter Converted Edition is a New Title Announced for the PS Vita――A Lottery Without Losers Held at the Prototype Booth at TGS!. ASCII Media Works. September 19, 2013. September 19, 2013. Japanese. May 15, 2020. https://web.archive.org/web/20200515121418/https://dengekionline.com/elem/000/000/716/716700/. live.
- Web site: クドわふたー Converted Edition Nintendo Switch. Prototype. October 20, 2023. ja. October 26, 2023. https://web.archive.org/web/20231026060727/https://www.prot.co.jp/switch/kudwafter/index.html. live.
- Web site: http://dengekionline.com/elem/000/000/965/965878/. ja:PS3版『Rewrite』が2015年2月11日に発売。移植版で最高のグラフィック&音質に. A PS3 Edition of Rewrite Will be Sold on February 11, 2015. The Port Will Have the Highest Graphic and Sound Quality. ASCII Media Works. November 27, 2014. November 27, 2014. Japanese. March 25, 2020. https://web.archive.org/web/20200325165128/https://dengekionline.com/elem/000/000/965/965878/. live.
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- Web site: Rewrite Spec. Prototype. February 11, 2014. Japanese. May 5, 2014. https://web.archive.org/web/20140505045021/http://www.prot.co.jp/psp/rewrite/spec.html. live.
- Web site: Rewrite Spec. Prototype. August 26, 2014. Japanese. September 3, 2014. https://web.archive.org/web/20140903080638/http://www.prot.co.jp/psv/rewrite/spec.html. live.
- Web site: Spec PS Vita Rewrite Harvest festa!. Prototype. March 14, 2017. Japanese. March 25, 2020. https://web.archive.org/web/20200325173015/https://www.prot.co.jp/psv/rewritehf/spec.html. live.
- Web site: https://twitter.com/key_official/status/1074665108146515970. ja:Key開発室. Twitter. December 17, 2018. December 17, 2018. Japanese. April 16, 2019. https://web.archive.org/web/20190416131957/https://twitter.com/key_official/status/1074665108146515970. live.
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- Web site: Nintendo Switch Summer Pockets. Prototype. December 21, 2018. Japanese. December 25, 2020. https://web.archive.org/web/20201225100808/https://www.prot.co.jp/switch/summerpockets/index.html. live.
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- Web site: Summer Pockets REFLECTION BLUE. Apple. July 14, 2021. ja. July 14, 2021. https://web.archive.org/web/20210714195349/https://apps.apple.com/us/app/summer-pockets/id1444587492. live.
- Web site: Summer Pockets Reflection Blue PS4. Prototype. May 17, 2022. ja. June 23, 2022. https://web.archive.org/web/20220623120311/https://prot.co.jp/ps4/summerpocketsrb/index.html. live.
- Web site: Spec. Prototype. July 14, 2021. ja. July 14, 2021. https://web.archive.org/web/20210714200222/https://www.prot.co.jp/switch/summerpocketsrb/spec.html. live.
- Web site: LOOPERS -ルーパーズ-. Planet Media. February 6, 2022. ja. February 5, 2022. https://web.archive.org/web/20220205121349/https://onlinegame-pla.net/loopers/. live.
- Web site: LOOPERS coming to PS4 on February 16, 2023. Gematsu. November 16, 2022. November 16, 2022. November 16, 2022. https://web.archive.org/web/20221116060404/https://www.gematsu.com/2022/11/loopers-coming-to-ps4-on-february-16-2023. live.
- Web site: Key, Ryukishi07's Loopers Kinetic Novel Gets Switch Release With English Text This Year. Anime News Network. February 5, 2022. February 6, 2022. February 5, 2022. https://web.archive.org/web/20220205153907/https://www.animenewsnetwork.com/news/2022-02-05/key-ryukishi07-loopers-kinetic-novel-gets-switch-release-with-english-text-this-year/.182257. live.
- Web site: Jun Maeda's Heaven Burns Red Game Launches on February 10. Anime News Network. February 3, 2022. June 27, 2022. October 10, 2022. https://web.archive.org/web/20221010052356/https://www.animenewsnetwork.com/news/2022-02-03/jun-maeda-heaven-burns-red-game-launches-on-february-10/.182206. live.
- Web site: Key開発日誌(魁). Key. February 24, 2022. February 24, 2022. ja. February 24, 2022. https://web.archive.org/web/20220224224433/https://key.visualarts.gr.jp/archives/4185. live.
- Web site: LUNARiA -Virtualized Moonchild- Nintendo Switch. Prototype. October 20, 2023. ja.
- Web site: Kinetic novel Harmonia coming to Switch this fall in Japan. Gematsu. July 6, 2022. August 4, 2022. June 8, 2023. https://web.archive.org/web/20230608181834/https://www.gematsu.com/2022/07/kinetic-novel-harmonia-coming-to-switch-this-fall-in-japan. live.
- Web site: 終のステラ スマホ版 本日リリース. Key. May 3, 2023. May 3, 2023. ja. May 3, 2023. https://web.archive.org/web/20230503220639/https://key.visualarts.gr.jp/archives/5041. live.