Carn Evil/Nightmare Fuel


 * This game breathes and lives this trope to the nth degree, but many people seem to have a fond memory of Junior, the boss of the Freak Show level.
 * The "Freak Show" level. This particular level features as enemies flies and maggots with human faces, twin brothers attached at the waist that laugh when shot to death, severely tortured and possibly brainwashed sadomasochists, and the rotting corpse of a "bearded woman" (which is infested with said human-faced maggots). There's also set pieces like a "fly trap" whose floor collapses to reveal lumps of rotting flesh under it, and a torture hall with some machinery smashing corpses to goo and putting them in giant cereal bowls. This doesn't compare though to the horrific boss fight with Junior, a gigantic Frankenstein's Monster baby that chases you around a huge baby cage/arena, complete with giant toys, while a very eerie version of "Pop Goes the Weasel" plays. The only way to kill him is to electrify him and reduce him to a huge pile of ashes. Check out by yourself, if you dare. Hell, Midway eventually released a version that added the option to replace Junior with a slightly less scary teddy bear monster named Deaddy.
 * Less scary? He's a giant teddy bear, but he still has Junior's baby sounds, instead of something that actually fits him.
 * And even the mooks are drop-dead horrifying, continuing to smile their frozen, goofy grins even after you've blown half their heads off and severed their limbs. The flying clown head spouting gory rhymes doesn't help either.