The concept of the InfiniteWorlds setting is that the universe consists of an infinite number of alternative universes ordered in different "bands". Two major powers (Homeline and Centrum) are fighting each other across these Quantum bands, unable to reach each other due to their distance (in Quantum Bands). So they fight on the worlds they can both reach.
These worlds can be whatever is wished - even physical rules do change. Some are echoes of the main "homeline", with some of these echoes being other timelines. Some are alien universes following their own rules, where magic reigns. As a result, the InfiniteWorlds setting can be used to host any world that a game master can come up with. So, whatever your game is, and even if the world does not know about the InfiniteWorlds setting, it has a place in this setting.