I played it for like 8 hours the first day and then stopped playing. I think it is really worth the $10, for sure. The problem was that the micromanagement got too tedious as the game progressed, which isn't really surprising considering it was an RTS from Peter Molyneux.
Still there is Sandbox mode -- that I never attempted. Apparently that is a lot of fun and allows you some freedom.
Actually there is a website where people have uploaded their movies, and it is pretty cool. I think Ender would be interested in this too.