Take your plain vanilla FPS, add a goey dollop of gravity gun, and then top it off with the mother of all cherries—a gun that allows you to create portals in space anywhere—and you’ve got a mind-hemmoraghing sundae of FPS bliss. Don’t believe us? Just play the video below and sit back as your brain explodes.

Portal, to be released for the PC, equips you with a gun that creates rips in space that you can travel between. Want to get to the other side of a ravine? Just shoot a portal at the wall on either side, and it’s as simple as walking across. Want that box to hit an enemy and kill them? Shoot a portal above the enemy, shoot a portal under the box, and watch him get clobbered. Want to create an infinite loop? Shoot a portal at the ceiling, shoot a portal at the floor, and watch as you fall forever. But, as always a picture is worth a thousand words, and a 2 minute 22 second video at 24 frames-per-second is thus worth about 3,408,000 words. So just click the link below and watch!