Take a look at action-packed gameplay from Gatekeeper in this latest trailer for the upcoming rogue-lite shooter game that's coming to PC. In Gatekeeper, go on a quest to find the stolen Heart of the Universe and shoot your way through the hordes of machine enemies guarding the planetary gates. Play in solo or in co-op with friends and become the next Guardian! n the times when the Ancient Ones - the Creators - have left the realm, you must protect the Hearts of the Universe that keep the Cosmic balance.