Hardest games

[Emu]

I was playing Blaster Master today, and that game is fucking difficult, if only because it has no password/save system.

[Chojin]

Marathon 1-2 have some pretty poor level design, but the live overhead map is usually enough to find you through. Marathon infinity, though, has some of the tightest spaces I've ever seen in an FPS and I've never found my way through the first level :<

[DuFresne]

I finally just got around to renting Super Monkey Ball, and this game is very good at pissing me off.