Codex Gamicus:Company Index/At
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| Name | Business Type(s) | Company Type(s) | Country of Office | Status |
| Atari | Public | |||
| Atari Interactive | [[Division of Atari Corporation]], [[ Subsidiary of Hasbro Interactive]], [[ Subsidiary of Atari SA]] |
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| Atari, Inc. (Atari, SA subsidiary) | [[Subsidiary of Atari SA]] | |||
| Atari, SA | [[Public Template:Euronext]] | |||
| ATI Technologies | Subsidiary | |||
| Atlus | Public | |||
| Atomic Games | ||||
| Atomic Motion | ||||
| Attic Entertainment Software | [[GmbH]] |
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