Mario you owe me an iTunes giftcard! I got 5 of my friends to sign up with checkpoint on your name! Also I'll take a promocode!
Looks really cool. I loved portal and i would really like a chance to try this out and give you feedback and an itunes review
There we go, you've burned through all the codes quickly! For those that didn't get chance for a promo, there still is Portaball Lite version available (for free! ): Portaball Lite on iTunes