343 Industries was an American Game Development Studio focused on creating new games in the Halo series. On October 6 2024, the studio was rebranded as Halo Studios.

The Creative Assembly is a British video game developer founded by Tim Ansell. In its early years, the company worked on porting games to MS-DOS from Amiga and ZX Spectrum platforms, later working with Electronic Arts to produce a variety of games under the EA Sports brand. In 1999, the company had sufficient resources to attempt a new and original project, proceeding to develop the strategy computer game Shogun: Total War which was a critical and commercial hit, and is regarded as a benchmark strategy game. Under Sega, further Total War titles were developed, and The Creative Assembly entered the console market with action-adventure games such as Spartan: Total Warrior, Viking: Battle for Asgard and Alien: Isolation.