One Button Bob is a single-button action game in which you have to help Bob survive an obstacle course to reach the treasure he desires. The control scheme is switched around in every room, meaning that you could be running away from a boulder, climbing a set of ladders or jumping from one platform to another as you venture further into the cave.

It takes about ten or fifteen minutes to finish the entire adventure, and there isn't really any incentive to replay it after you've completed your quest.