The following are the winners of the 31st annual Origins Award, held in 2005:
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| 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 | Attack Vector: Tactical | 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 |