Xbox announced the December 2025 Game Pass additions on December 2. Mortal Kombat 1 arrives on December 10 for Ultimate and Premium subscribers. The game features an updated fighting system, new modes, fatalities, and baby transformations for defeated opponents. It continues the series that started in 1990s arcades. Routine launches on December 4 as a day one release for Ultimate subscribers. The sci-fi horror game was first announced in 2012. It has a retro aesthetic and focuses on exploration and narrative elements.
Dome Keeper joins on December 9 for Premium and Ultimate subscribers. The roguelike combines mining simulation with tower defense. Players dig for resources, defend a dome from attacks, and repeat runs with upgrades. Lost Records: Bloom & Rage is available immediately for Premium and Ultimate subscribers. The narrative adventure from the Life is Strange developers is set in the 1990s. It follows a group of friends dealing with personal stories and events.
Several games move from Ultimate exclusive to Premium availability. Indiana Jones and the Great Circle released earlier in 2025 and features first-person action adventure with puzzle solving. Monster Train 2 is a roguelike deckbuilder with train defense mechanics. 33 Immortals is a multiplayer roguelite shooter. Spray Paint Simulator lets players create graffiti art in a virtual environment.
All titles are playable on Xbox consoles, PCs, and cloud where supported. Ultimate tier includes console, PC, and cloud access. Premium tier covers console and cloud. Standard Game Pass has console only. The lineup covers fighting, horror, roguelikes, and adventures across genres.
