Halo Wars is a real-time strategy (RTS) video game developed by Ensemble Studios and published by Microsoft Game Studios for the Xbox 360. It was released in Japan and Australia on February 26, 2009, in PAL territories on February 27, and in North America on March 3. The game is set in the science fiction universe of the Halo series in the year 2531, 20 years before the events of Halo: Combat Evolved. The player leads human soldiers aboard the warship Spirit of Fire in an effort to stop an ancient fleet of ships from falling into the hands of the genocidal alien Covenant.

Halo 3 is a first-person shooter game developed by Bungie for the Xbox 360. It was announced at E3 2006 with a real-time cinematic trailer. It was released on September 25, 2007 in North America, September 26, 2007 in Europe and September 27, 2007 in Japan.

Halo 2 is a first-person shooter video game developed by Bungie Studios. Released for the Xbox video game console on November 9, 2004, the game is the second installment in the Halo franchise and the sequel to 2001's critically acclaimed Halo: Combat Evolved.