As a yellow ninja, your quest is this: deactivate the laser and get the key by pressing a big red button. You must do that twenty times, unsurprisingly given the title Button x20. Ah, but what sounds so basic becomes such addicting fun in this platform puzzle game from the very creative Tom Vencel of Ninjadoodle. Using the [arrow] keys, hop, push, avoid, and jump through all manners of hoops to make that door appear so you can exit the room—and do it over again through 20 stages. Each level has a different stunt to perform or hazard to face, hinted at in the title. Usually it's just up to your wits to figure out what you must do, other times you'll need precision platforming skills, but always it's upbeat and engaging, a game that knows how to push all your gamer buttons.