5. C-3 - Super Mario Bros. The Lost Levels (SNES)
http://www.youtube.com/watch?feature=player_embedded&v=s1-Nxr3DjJs#! Dedicated Mario fans everywhere know that Super Mario Bros. The Lost Levels was a stupidly difficult series of increasingly frustrating platform hi-jinks, though there's no level more punishingly unappealing than stage "C-3." At first, this level kind of looks like a joke (and it is a bonus level, to be fair), one that asks you to navigate a series of platforms whilst Mario is... where is Mario? He's up in the sky, of course, and it's up to you to judge where and when exactly he's going to make an appearance, whilst trying to utilise wind which has no discernible pattern. The Lost Levels was designed, you'll remember, as a genuinely difficult Mario game on purpose (and it still is probably the hardest one). But when the levels begin to look like this, you know that Nintendo are laughing at you, and that you're about to go freakin' nuts.