You Have To Burn The Rope
(Well, I feel a little cheap reviewing this one next, but it is the next one in my list, so...)
You Have To Burn The Rope may be the only game I've ever encountered where the title is a walkthrough for the whole game. The game is...well, I'm not sure how best to describe it. An experiment? A joke? A trenchant social commentary? (Hopefully not.) Anyway, I feel a little silly describing the game, but I shall. You go through a tunnel (filled with helpful commentary) and meet a boss. To defeat the boss, you have to perform the titular action (sorry for my overuse of "titular" recently, but I just couldn't resist). Then you are treated to a triumphant song over the final credits. That's it!
Anyway. It's not the funniest of jokes, nor the most fun of games, but it will hopefully at least get a chuckle.