The following are the winners of the 31st annual Origins Award, held in 2005:
| Category | Winner | Company | |
|---|---|---|---|
| Best Play-By-Mail Game | Fall of Rome | Enlightened Age Entertainment | |
| Best Historical Board Game | Sword of Rome | GMT Games | |
| Best Historical Miniatures Line | WWI: Western Front 28 mm | Brigade Games | |
| Best Historical Miniatures Game | Dawn of the Rising Sun: The Russo Japanese War 1904-1905 | Clash of Arms Games | |
| Best Board Game | Ticket to Ride | Days of Wonder | |
| Best Miniatures Game | Ad Astra Games | ||
| Best Miniatures Line | Elmore Dragons | Dark Sword Miniatures, Inc. | |
| Best Collectible Card Game | Seven Masters Vs. The Underworld | Z-Man Games | |
| Best Traditional Card Game | Cthulhu 500 | Atlas Games | |
| Best Role Playing Game | Ars Magica 5th Edition | Atlas Games | |
| Best Role Playing Game Supplement | Eberron Campaign Setting | Wizards of the Coast | |
| Best Fiction Publication | Path of the Bold | Guardians of Order | |
| Best Non Fiction Publication | Pyramid Magazine | Steve Jackson Games | |
| Best Game Accessory | Cardboard Heroes Castles | Steve Jackson Games |