I've not seen it mentioned here yet but Ron released a new game for the iPad a couple of weeks back called The Big Big Castle!
Clayton K did the art for it too.
It was released through Beep Games, Inc.
It's a fun castle building/destroying game and it's also free!
Currently only available in the UK and Canada, though I am assured that this will change soon.
Check it out -
http://itunes.apple.com/gb/app/the-b...515771744?mt=8
Threaded Mode