The Ball of Cthulhu is a game that will drive you mad. Insane even. Get ready for maddening difficulty in this arcade-style puzzle game that’s full of “elder gods, crazed cultists, and the dread of looming insanity.” Eek!

The Ball of Cthulhu has 50 levels that feature an old-school classic challenge and a high score mode that adds an insane amount of replayability. There’s that word again, “insane.”

So, with that, go insane this Halloween for only $2.99!