Chubby Cherub is a weird game that time has clearly forgotten. In fact the existence of Kid Icarus (another cherub like being) is going to make this game completely irrelevant in one years time. I'm not really sure what's going on in this game, but I definitely didn't enjoy it. Sonic barking attacks from dogs and the ability to fly (in a platformer mind you) are about the only cool things in this game.
I'm actually more interested in the original famicom game that Chubby Cherub is based off of where you play as a ghost known as Q-taro from the manga, Obake no Q-tarō. Even then though, the gameplay would remain unchanged and that's really the thing that's stopping me from ever picking this guy back up. Although, check out the show notes for what is definitely the funniest mistranslated wikipedia entry I've ever read about an NES game.
Chubby Cherub is one of the most frustrating kinds of games to play. It's one of those games that just seems to exist. It's "themed" without an actual aesthetic. The gameplay mechanics that it introduces do little to actually provide fun or enjoyment. It doesn't do anything particularly poorly, but neither does it do anything all that well. The only notable aspects of this game are the head scratching decisions the developers made to localize it to a western audience, leaving the work without any context. Avoid Chubby Cherub unless you're on a quest to create your own "Most Mediocre Games on the NES" Collection.
Chubby Cherub is the kind of game you play when boredom exhausts all your other options. You tried going outside. You tried throwing a ball against the wall. You tried seeing how long you could hold your breath for. With everything else checked off, you think to yourself, “I guess I could play that Chubby Cherub NES game. It’s like, fine I think.” It’s the kind of game that you would hate yourself for getting good at, partly because you’ll have that dumb song stuck in your head.