Wielding a powerful railgun and the ability to travel between worlds, you must travel from room to room and fight opponents in environments that change depending on the world you traveled to. Time the charging and release of your railgun, along with strategic use of your world-shifting ability, to speedily reach the end of the level.

Use left-click, or the LMB, to charge your railgun. Once fully charged, you can fire at your enemies. Use right-click, or RMB, to switch worlds. This changes the environment and your enemies, but has a 5 sec cooldown.