Amazon Prime is once again treating subscribers to a classic game for free. Unfortunately, if you're gaming on Xbox One, Xbox Series S, and Xbox Series X the free game is not available to you as it's been made free via its other platform, PC, and via Prime Gaming.  Quake 4 is a narrative-driven, sci-fi, military-style first-person shooter and direct sequel to Quake II that also includes arena-style multiplayer modes," reads an official pitch of the game