Xtreme Party for PSP is a very puzzling game: it is supposed to be a fun collection of 30 minigames, but it locks out almost all of them except 4. The whole premise is you unlock more games by purchasing them. You earn money to purchase those games by doing well in unlocked games and placing in the leaderboard. This artificial limit definitely prevents this game from, well, being a good party game.
Download Xtreme Party PSP Homebrew Now