Nightmare Fuel: Rayman
Rayman has several examples of Nightmare Fuel, notably most of them in the second game.
- The Cave of Bad Dreams. The cave itself is made from nightmarishly grotesque faces, for most of the level, you're riding on skulls across what's pretty much the river Styx. Next you have these wooden claw-like things that sweep out at intervals on the wall, if you get caught by one, it slams Rayman around before dragging him into its hole, where he loses some health and respawns. Next up, we get the mini-guardians, these things aren't much of a threat on their own, but if they get close enough to Rayman, they'll swallow him whole and alive for hp loss and a respawn. At the very end of the cave, the Guardian arrives and attempts to eat Rayman, the camera switches to Shaky P.O.V. Cam of his mouth as you attempt to escape him on a slide.
- The Tomb of the Ancients. There are skeletons everywhere, the wall design is very similar to the Cave of Bad Dreams, and it has another river Styx boat ride This time you have to fend off zombie chickens on a very small barrel; once you get to the end of that area, you find a pitfall. The tempo of the music changes to Psycho Strings after you get down to the bottom, at a tempo played to simulate something skittering towards you from the darkness, right before a Giant Spider attacks you. The music.
- Most of The Desert Of The Knaaren from the third game. The top is eyebrow-raising enough, with a land of lava and acid pools, but once you fall underground OHHH BOY. It's not just the fact that the place is completely dark and filled with skulls. The Teensies warn you that the Knareen are invincible, they are not joking. The Knareen are the scariest enemies in the entire series, being COMPLETELY INVINCIBLE and forcing you to sneak past them, being shrouded in hoods and having strange inhuman growls, and constantly screaming to devour Rayman.