You may have first played Superhot when it was a free, browser-based tech-demo for any inquisitive gamer looking to kill a few minutes with a budget shooter. The gimmick is simple: the world only moves when you move. Stand still, and the haze of bullets pointed in your direction will freeze in time. The result is a brilliant, mind-bending puzzle that marries the twisted physics of Portal with the brazen stylishness of The Matrix. The full version, which debuted this spring, proves that a truly great mechanic can be expanded without getting stale. Even after you finish the brief campaign you'll be happy to sink hours into the "endless" mode, letting your eyes roll back into your head as you rip slow-motion shotgun blasts through an infinite supply of polygonal goons.