Killer Instinct: Definitive Edition is one of the latest additions to Game Pass for Xbox One and PC, and claims to include all 26 characters from seasons one to three of the game.
However, players are discovering a bug with the PC Game Pass version, making it so the only playable character is Rash from Battletoads.
Killer Instinct publisher Microsoft says it is aware of the issue, and tweeted on 26th July to say the problem is being worked on. But, as of today, players are still reporting the bug has yet to be fixed, and according to one eagle-eyed Twitter user the issue is due to Game Pass providing PC players with the Xbox files for the game.