I just want to say thank you very much for your efforts on enabling game session in progress saves in the iOS game. I've already played through in Challenging mode but held off Dark Matter because of the need to dedicate time to play a level for fear of loosing progress.
Now that the new version has been released I'm playing in earnest! It's a shame I don't have an iPad 3 though as I'd love to have seen the retina detail!

How does iCloud support work? Does it mean my game progress can be picked up on my iPhone half-way through the game, or just level position?