Codex Gamicus:Company Index/Ac
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| Name | Business Type(s) | Company Type(s) | Country of Office | Status |
| Acclaim Cheltenham | Video games | |||
| Acclaim Entertainment | Defunct | |||
| Accolade | Defunct | |||
| ACE Team | [[Private]] | |||
| Acheron Design | [[Video game developer]] | |||
| Acornsoft | [[Computer software]], [[Video game developer and publisher]] | |||
| Acquire | [[Kabushiki gaisha]] | |||
| Activision | Public | |||
| Activision Blizzard | [[Public Template:Nasdaq]], [[Subsidiary of Vivendi]] | |||
| Activision Value | [[Public]] |
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