I saw this earlier today on Kotaku, looks interesting :
http://kotaku.com/5903223/dont-like-any-of-the-games-in-the-app-store-make-your-own
[tube]http://www.youtube.com/watch?v=Qq4Bjd32QdY[/tube]
Develop games in your browser. Powerful, performant & highly capable.
Heh, cool. Looks a bit like a cookie-cutter engine though.