Are there any iOS games that allow or encourage user created content? I haven't heard of many but listed some below. It seems that with the mobile nature of the device user created content could be the wave of the future and a great promotional tool. Tiki Totems 2 - there is an seperate "Tiki Totems 2 Builder" editer allowing creation of new levels and sharing by e-mail The Quest - hosted an expansion design contest and published the winner (Lost Archipelagos) ChuChu Rocket - includes 100 user created levels from the original Dreamcast console release. Doomsday II: Legions of Hell - developers negotiating with Apple to allow file sharing of user created levels. Minigore [unofficial] - Someone hacked it to add a new level.
Fantastic Contraption lets you make your own levels on the ipod and access levels people made on the computer version of the game.