SEGA is a publisher of several games that have Steam Trading Cards, including:
- Company of Heroes 2
- Empire: Total War
- Football Manager 2013
- Football Manager 2014
- Football Manager 2016
- Medieval II: Total War
- Napoleon: Total War
- Rome: Total War
- Sonic & All-Stars Racing Transformed
- Spiral Knights
- The Typing of The Dead: Overkill
- Total War: ATTILA
- Total War: ROME II
- Total War: SHOGUN 2
- Warhammer 40,000: Dawn of War II
- Warhammer 40,000: Space Marine
SEGA also developed Valkyria Chronicles.