nice
I didn't know the music was by epic megagames! they made one of the best games existing: jazz jackrabbit! (and you thought I'd say a modern title huh?:P)
now for my comments:
the first 40 levels were pretty simple, 41 through 60 aren't too hard either. 61-80 were getting quite difficult and 81-100 were extremely hard
101-120 were actually too easy: the 'way too easy' levels with dissapearing walls.
I'm looking for my cookie now :3