What a shock! There was an Ice World, a Lava World and a Castle World! I must be psychic or something. And then there was a Crystal World, with the most irritating baddies in the world EVAR in it – giant bomb creatures that explode themselves (but don’t die). On the one hand, they’re great as they wipe out some of the other baddies by themselves. On the other hand, they tend to sit next to the exit and blow it up (which releases more baddies).
But that doesn’t matter now, as World 10-9 was completed, and the End of Game Boss was defeated. And The Game Was Over.