Companies
- Acer
- Acid Nerve
- Acid Wizard Studio
- Acquire
- Activision
- Activision Blizzard
- Adata
- Adult Swim Games
- Agenda
- Agetec
- Aksys Games
- Akupara Games
- Alchemist Series
- Alfa System
- Alienware
- Alkimia Interactive
- All In! Games
- All Possible Futures
- Alpha Dog Games
- Alphadream
- Alten8 Ltd.
- Amaze Entertainment
- Amazon
- Amazon Game Studios
- Amazon Game Studios, Double Helix Games