Walker is an indie designed platformer where you play as a nondescript cartoon character in a world full of dangers and traps. You must make your way through the various levels and collect various items that allow you to move on to the next level. The catch is that you only have one control, the z button, which controls the avatar's jumping. The character moves on his own, hence the name walker, and will only change direction when coming in contact with certain location entities. The puzzle of the game is figuring out how to use that one control to succeed and make it through.