5. Spikes - even if they don't have any right to be there, spikes will usually turn up in games. Examples: Batman (Genesis), James Bond, Jr. (SNES)

4. Lava - Another hazard, similar to spikes, that crops up in even more outlandish places. Doesn't occur as much as spikes, but are even funnier when it does. Examples: Mario Bros. 3 (NES, in the middle of castles?!?!)

3. Scrolling Sequences - The areas where a generic threat (or possibly just cruel programmers) forces you to outrun the left or right side of the screen which is always moving toward you. Theses can be the worst things you encounter, the very death of your character. Examples: Indiana Jones and the Last Crusade (Genesis, the final level has the path constantly shortening), Jurassic Park: The Chaos Continues (Game Boy, the T-Rex pushes you through an unusually built paddock).

2. Leaps-of-Faith - Innumerable titles require you to jump blindly off screen, like Indiana Jones during the Three Trials. Examples: James Bond, Jr. (SNES), The Pagemaster (SNES, Genesis)

1. Out-of-Place Moving Platforms - These pop up in several games, usually in areas that wouldn't ever have such things. Examples: The Mask (SNES), Robocop 3 (SNES, Genesis)