Craftland.org

When people do /game join qc 4 (or whatever number is given), they are teleported to spawn with a separate inventory and the notch hammer. They then play Quakecraft as normal in the Spawn world, and it continues not unlike most Quakecraft games. They are in the same spawn world as normal people, but players who aren’t in the Quakecraft game cannot affect the players in the minigame, and vice versa.

This would definitely be very unique and add some variety to the minigames.