Way more effort put into this mod, to the point you can barely tell this is a mod for Keen 6 "Aliens Ate My Babysitter." The enemy design are very imaginative this time around, including the final boss of the game, who is an alien imposter of Commander Keen. I think this is the first time you have a full on boss fight in this franchise (Keen 3 doesn't count, because you don't fight Mortimer one-on-one). I can't wait to get to Keen 9, if I remember it's the most ambitious of the 3.