Amplify is giving kids what they want with the math puzzler Twelve. Designed by London’s Bossa Studios, the same folks behind the madcap hit Surgeon Simulator, Twelve is a devilishly difficult platforming game (a la Super Mario Brothers) that actually uses math as a novel play mechanic, rather than a tone-deaf attempt to trick kids into learning. In Twelve, you play as a lost and lonely number trying to find “the one.” You must avoid zombies (the number zero, obviously) while employing algebraic equations to traverse the dark and brooding world.