For better or for worse, these seem to be the exact same levels but just built in a better engine. I'm probably wrong about that, I'm sure the new levels start at some point, but I got bored by level 6 because its one of those 'wait a really long time' levels and I really didn't care enough to keep playing to see when the new levels started.

I get needing to teach the player how to play, but the exact same levels? It's kinda just sad, because I was expecting something new.