Companies starting with A
- A Crowd of Monsters
- A Grumpy Fox
- à la mode games
- A44
- Aardvark Swift
- Abbey Games
- Absolute Tabletop
- Abstraction Games
- Absurd Ventures
- Abyssal Arts
- Accelerate Games
- Access Games
- Accidental Queens
- Accidentally Awesome
- Acclaim Games
- Accolade
- ACE Team
- Acer
- Achimostawinan Games
- Acid Nerve
- Acid Wizard Studio
- Acquire
- ACRONYM Games
- Action Forms
- Activision
- Activision Blizzard
- Actual Nerds
- Adamgryu
- Adata
- Adglobe Inc
- Adonis Brosteanu
- Adult Swim Games
- Aeternum Game Studios
- Afterburn
- Afterburner Studios
- Agens
- Agetec
- Aggro Crab
- Ahr Ech
- Airship Syndicate
- Airtight Games
- Akella
- Aksys Games
- Akupara Games
- Alambik Studio
- Alan Smithee
- Alblune
- Alchemist Interactive
- Alderon Games
- Aleph One Developers
- Alex Harvey
- aliasBLACK
- Alientrap Games
- Alienware
- Alkemi
- Alkimia Interactive
- All In! Games
- All Possible Futures
- All Yes Good
- Almost Human
- Altered Orbit Studios
- Amanita Design
- Amaze Entertainment
- Amazon
- Amazon Game Studios
- Amazon Games
- Amazon Prime
- AMC Games
- AMD
- Amplifier Game Invest
- AMPLITUDE Studios
- Anchor Inc.
- Ancient Forge Studio
- Andriy Bychkovskyi
- Anegar Games
- Angel Matrix
- Animita Project
- Ankama Games
- Annapurna Interactive
- Another Indie
- Anshar Publishing
- Anshar Studios
- Antfood
- Antistatic Studios
- Anuman Interactive
- AOC
- Apogee Software
- Appeal Studios
- Apple
- Application Systems Heidelberg Software
- Aquatic Ranger Studio
- Aquiris Game Studio
- Arachnid Games
- Arbitrary Metric
- Arc System Works
- Arcen Games
- Archangel Studios
- Archetype Entertainment
- Arctic
- ArenaNet
- Ares Dragonis
- Arkane Austin
- Arkane Lyon
- Arkane Studios
- Arman Bohn
- Armature Studio
- Armor Games
- Armor Games Studios
- Arrowhead Game Studios
- Arrowiz
- Artdink
- ARTE France
- Artefacts Studio
- Artificer
- Artisan Studios
- Arzest Corporation
- Asakusa Studios
- Ascaron
- Ascendant Studios
- AsiaSoft
- Asmodee
- Asmodee Digital
- Asobo Studio
- Aspyr
- ASRock
- Assemble Entertainment
- Astragon Entertainment GmBH
- astro hound
- Asus
- Atari
- Atelier QDB
- Atlus
- Atlus USA
- Atomic Games
- Atomic Jelly
- Atomic Wolf
- Attu Games
- Audeze
- AuntyGames
- Auroch Digital
- Aurora44
- Autumn Games
- Autumn Pioneer
- Avalanche Software
- Avalanche Studios
- Awaceb
- AWD-IT
- Axis Games
- Axolot Games
- Ayopa Games