Mystic Cave, Chemical Plant, Aquatic Ruin and the Death Egg Robot are the real standouts with the rest being decent/ok. Emerald Hill is super bland, Hill Top is on par with GEMS junk, Death Egg you literally can't hear in-game without really trying (and even then doesn't really fit the stage well). It's not 'crappy', but it is the weakest of the mainline Mega Drive games (I only say mainline because lol Spinball).
