When sliding through a blocky two color world, keep one thing in mind: Space is Key. Actually, if you're playing this painfully challenging arcade game on your iOS device, that title isn't as true. With the browser versions of Space is Key and Space is Key 2, all you do is tap the [spacebar] to jump, hence the name. On a touch screen there is no spacebar, so instead, your finger is key. That's a bit of an awkward title for a game, though, so instead of brain thinking, we'll game playing!