Altered Beast/YMMV

Crowning Music of Awesome: The soundtrack is short, but sweet. A Brazilian band even made an entire album with metal versions of it!
Game Breaker: The dragon form can fly all around the screen, and its secondary attack is a area-effect barrier of lightning. Also, when just a normal centurion, the jump kick will destroy almost everything in quick order.
Ho Yay: Not only features muscular men, the poses some of them do are suspicious.
It's Short, So It Sucks: A common contemporary complaint (then again, 5 levels are enough for an arcade, or at least were in '88).
Polished Port: The Sega Genesis version had parallax scrolling], better backgrounds, and better music. It's pretty much the only reason why this game is nowadays considered a cult-classic. Despite each other adaptation being a...
Porting Disaster: Pretty much every other port of the original arcade game. Common consensus tends to be that the Master System port was the worst, although the NES (yes, NES) port was pretty bad as well, despite including extra levels.
Memetic Mutation: "WISE FWOM YOUW GWAVE!"
- "WELCOME TO YOUR DOOM!"
Nightmare Retardant/Our Monsters Are Different: All the transformations of Neff. Including a weird flesh monster who throws his head at you, a eye-composed thing, a literal dragon-snail (too much snail) and a crocodile-jewel thing. His last form is a Rhino-man.
- That first boss can be considered somewhat creepier than the others, though.
Seinfeld Is Unfunny: While it was originally a pre-Sonic the Hedgehog pack-in to showcase what the Genesis/Mega Drive could do, contemporary reviews are cruel to the game, saying it has aged badly.