First-party A first party developer is a subsidiary of Microsoft and one in which Microsoft has a controlling interest in (51% or more ownership). Current first-party Rare- Formerly a second-party developer to Nintendo, Microsoft bought Rare in September of 2002. Rare has since made for the Xbox/Xbox 360. Grabbed by the Ghoulies, Conker: Live and Reloaded, Kameo, Perfect Dark Zero, Viva Piñata, and Banjo Kazooie Nuts and Bolts.
Xbox Live Productions- A new first-party studio set up to develop Xbox Live Arcade games and digital video content.
Defunct first-party
Second-party A second-party developer is one that creates games exclusively for Xbox systems through a contract agreement. Microsoft may or may not own a percentage of the studio, but not enough to give it a controlling interest. Current second-party
Defunct second-party
Former second-party
Third-party A third party developer is one that is not tied to any specific system. Those listed here have expressed explicit support for Xbox systems, with some developers creating games exclusively for Xbox systems.
Current Exclusive to Xbox systems
Not Exclusive
Defunct
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