Super Meat Boy is a hardcore platformer title developed by Edmund McMillen, the same guy who brought us The Binding of Issac (which is another title you might want to check out). The game revolves around a boy made out of meat who dies over and over again while trying to save his girlfriend made out of bandages from an evil fetus in a tuxedo wearing jar. The game is as ridiculous as it sounds -- both in concept and in gameplay.
Believe it or not, this is one of the easier levels...
Super Meat Boy is all about pushing the player's limits. If you're not a player who is used to constant punishment by the game, this game probably isn't for you. It is, however, a perfect title to play over and over if you are a fan of time attacks, no-hit runs, and no-mistakes platformers.
It should be noted that this game requires at least pixel shader 3.0. Most graphics cards post-2006 have this ability, but if you are unsure then you should check your graphics card's specs before buying this title. If you have the right card, then you can find the game here for $14.99.