Gargoyles isn't bad for a license game on the genesis still it's difficulty can be rather nasty.
It's not bad at all, you can really see there was ambition involved to capture the dark gothic-inspired atmosphere of the animated series. The animations of Goliath are very good, fluid and full of detailed frames, his ability to fly is a great addition to the gameplay, alas, the controls are seriously lacking precision and the dark tone gets tiresome after the first stage.
You can't see your enemies early enough, because everything is too dim. Worst of all, though, is your main weapon: Fighting solely with your fists is already underwhelming, but the fact that your attack lacks power and rage, turned me off for good. I like difficult games, if the difficulty is based on clever stage/enemy layout and not on underpowering your character.
Lately I turned my attention towards lesser known western developed games on the Mega Drive, something I ignored for a long time, and like a lot of them. The best among them so far were Aero the AcroBat 2, Tinhead, Phantom 2040, Mr. Nutz, Radical Rex, Scooby-Doo Mystery, Bubble and Squeak and Hurricanes. I even liked The Tick, though it's obscure as hell.