for iOS. And I'm here today to tell you this momentous game is now available as a Time Waster for the rest of us -- and it's free! In terms of gameplay, what can I say? You're a robot unicorn and you attack while grooving to heavy metal, which is probably why the game is called Robot Unicorn Attack Heavy Metal!
To be a tad more clinical about it, the game can be described as a platformer, but each run is fairly short-lived. You launch from the left side of the screen, hitting Z to leap into the air. Once you gain a bit of speed, you can hit X to dash forward. You can also hit Z to double-jump (i.e, jump up while still airborne). With a clever combination of Z and X, you might not touch the ground for quite a while.
However, not touching the ground isn't enough to win: the level changes, and there are cliffs and all sorts of tricky topography. Run into a wall, and you die. The goal is to continue moving for as long as possible. If you're into heavy metal and unicorns, you owe it to yourself to try this game.