Another Castle combines classic platforming gameplay with the randomness of a rouguelike. You play as Andy, a kid who's looking for a random item, whether it be a kick ass magical sword, a wizard hat, or royalty. To find the item you must run, jump, and fight your way through a randomly generated castle. When you beat the game, you sadly won't get the item, as it's always in another castle. Instead, the item is now unlocked and can be found in future playthroughs of the game.
Check out the alpha here: