| Cellius | |
| Native Name: | 株式会社セリウス |
| Native Name Lang: | ja |
| Type: | Kabushiki gaisha Joint venture |
| Industry: | Video games |
| Location City: | Shibuya, Tokyo |
| Location Country: | Japan |
| Defunct: | February 29, 2012[1] |
| Key People: | Ken Kutaragi (CEO) |
| Products: | Software |
was a Japanese video game developer and publisher headquartered in Shibuya, Tokyo, founded in 2007 as a joint venture between Sony and Bandai Namco Holdings. The aim of the company was to "help take share from Microsoft Corp. and Nintendo Co."[2] Sony hoped that the company would make up for the losses it made during quarter two of its financial year. Ken Kutaragi was announced as CEO.[3] Bandai Namco Holdings held 51% of the company, and Sony held 49%. The company planned to use Sony's Cell microprocessor, the heart of the PlayStation 3, for PlayStation 3 games and games for mobile phones and personal computers. Its only video game project was the poorly-received Ridge Racer on the PlayStation Vita.[4] [5]