I can't believe I owned this. This is by far the craziest NES game. It's a hard one. I've gotten far but never beat it. But that's not why you play this game. It's its art and craziness. Stages are horror themed and can turn spookier. Enemies are grossly designed and unique. There are a ton of bosses. Oh man the bosses. So different and varied and did I mention crazy. One of the first stage bosses is an evil Onion Ring. Lots of classic monster designs too. Story was crazy. Boy visited by an alien monster and teleported to monster world. With enough power you could turn a baseball bat boy into a flying monster that could shoot projectiles. Was almost required to beat some bosses IMO. Game was one of those where the fuck do I go and how do I find the key to this door kinda games. It's art and monsters never kept me from not playing it though. Truly a special NES game.