I thought this game was cute. I played it because I got curious about what the game was after seeing a meme comparing its cover art in various regions. Possessing enemies was fun and there was a large cast of unique enemies, with every level introducing two or three new ones. I only ever saw one variant of an existing enemy which made every level exciting. The bosses weren't so great, many of them being extremely difficult and causing the game to slow down. There is also a lot of slowdown in bigger rooms which are very common in the later levels. Sometimes this makes it feel impossible. I played the gameboy version and was surprised to see there was an arcade version where the ghost you play as is actually the dead boyfriend of the girl you try to save, I was just told she was some researcher's daughter. I'm not sure if I got a full experience and I couldn't enjoy the later parts due to the difficulty & slowdown, but I was still impressed.