Invertis is the true online PvP tetris-like game that works on any platform. Invite whomever you want to play with by just sending a link - it's playable even in the browser. Its unique game play is ideal for passing some time with a friend - the typical game lasts 5 to 10 minutes. Just try - it's definitely worth it.

Please note that Invertis is not Tetris: it's multiplayer and lacks original patented game features.