| Title | Games |
 | A2M
Montreal, QC Canada | 0 |
| Acclaim Studios
Austin, Texas | 0 |
| Activision
Santa Monica CA | 19 |
| Adrenium Games
Location Unknown | 0 |
| Akella
Russia | 1 |
| Aki Corp
Location Unknown | 0 |
| Atari Inc
New York, NY | 3 |
| Argonaut Games
London UK | 0 |
| Avalanche Software
Salt Lake City, Utah | 3 |
| Acclaim Entertainment
Location Unknown | 0 |
| Amaze Entertainment
Location Unknown | 1 |
| Amusement Vision
Location Unknown | 0 |
| Amuze
Stockholm, Sweden | 0 |
| Anchor
Japan | 0 |
| Andamiro Entertainment
Seoul, Korea | 0 |
| Angel Studios
Location Unknown | 0 |
| Appaloosa Interactive
Location Unknown | 0 |
| Arc Systems
Austin, Texas | 1 |
| Arkane Studios
Location Unknown | 0 |
| Artech Studios
Location Unknown | 2 |
| Artoon Co
Japan | 1 |
| Asobo Studios
Bordeaux, France | 1 |
| Asylum Entertainment
London, UK | 0 |
| Atlus Software
Irvine, CA | 1 |
| Atomic Planet
UK | 0 |
| Awesome Studios
Location Unknown | 0 |
| Aquire
Japan | 1 |
| AQ Interactive
Japan | 0 |
| artdink
Location Unknown | 0 |
| Artdink
Location Unknown | 1 |
| Alchemic Productions
Location Unknown | 0 |
| ArcSystemWorks Co.
Location Unknown | 2 |
| Alpha System
Location Unknown | 0 |
| Artificial Mind
Location Unknown | 1 |
| Autonomous Productions
Location Unknown | 1 |
| Atomic Elbow
Sweden | 1 |
| A.C.R.O.N.Y.M. Games Inc.
Location Unknown | 1 |
| Alfa System
Location Unknown | 1 |
| Artificial Studios
Location Unknown | 1 |
| Airtight Games
Location Unknown | 1 |
| Access Games
Location Unknown | 1 |
| Arika
Location Unknown | 1 |
| Ascaron Ent. GmbH
Location Unknown | 1 |
| Archor Games
Location Unknown | 1 |
| Arrogancy games
Location Unknown | 2 |
| Ankama Games
Location Unknown | 1 |
| Antab
Location Unknown | 1 |
| arcarocket
Location Unknown | 1 |
| Absobo Studio
Location Unknown | 1 |
| Atomic Games
Location Unknown | 1 |
| Aaron Ramsey
Location Unknown | 1 |
| Arc System Works
Location Unknown | 1 |
| arcarocket
Location Unknown | 1 |
| Angelo Pelini
Location Unknown | 1 |
| Angel
Location Unknown | 1 |
| Adrenalin
Location Unknown | 0 |
| AQ Interactive
Location Unknown | 1 |
| Atomic Motion
Location Unknown | 1 |
| Aspyr
Location Unknown | 1 |
| Agent MOO
Location Unknown | 1 |
| ACE
Location Unknown | 1 |
| ASuperSonic
Location Unknown | 1 |
|
Live Chat: 12 |
Guests: 1205 |
Bungie's popular first-person shooter makes its debut on the Xbox 360 with Halo 3.
