

I’m gonna say Jet Force Gemini. It’s not hard in that enemies or bosses are difficult, though some were. It was those damn Tribals. You had to save every single one of them if you wanted to beat the game, and some were a pain to save without them getting killed.
As a weekly player with friends, bees and cuccos are pretty fun when they show up. My favourite though is definitely the Home Run bat. So satisfying to hit each player with it.