I know the OP is a WUM, but I actually think this is an interesting discussion.
Call of Duty has got ridiculous over the years, with all the 15 year olds absolutely sweating their bollocks to be 'MLG.' Unless you play CoD frequently, and you know all the spawn points, and head glitches etc, it's hard to compete with these sweaty bastard.
Same with FIFA as well - some of the kids you come up against are fucking ridiculous, and you end up being on the wrong end of an 8-0 after 27 minutes.
Which DM3 was it? I heard they re-released the game because it was too hardUncharted was fairly challenging on crushing difficulty. Toughest though? Hmmm. Ninja Gaiden Black on the highest difficulty. Actually, the toughest game I ever did was Devil May Cry 3 on DMD mode whilst getting a rank of SSS. Which basically means not getting hit. Ever.
Max Payne 3 was challenging and not in a good way.
The lion king for the Megadrive
Its nice and easy until you become adult Simba! Its like the last 4 levels they've been preparing you for the fact that adult life is just stupidly difficult and you'll yearn for the days when you were a kid blitzing through the elephant graveyard!
Oaf beat me to my picks. Alex Kidd is obscene late on, some nigh on impossible jumps that even withe using save states on emulators since, it still took me forever to beat the game. To be that good without using saves and complete the game legit is surely impossible.
Nope, my Mum of all people managed to complete it way before I did! I was 7 when she finished it, fast forward 20 years and I finally managed it too.
Super Meat Boy was hard enough on normal mode let alone even attempting the later dark worlds or the I Wanna Be The Guy warp zone. I'm not even sadistic enough to try playing I wanna be the Guy itself!
Speaking of difficult beat 'em ups (Golden Axe is a cinch, really) then Streets of Rage 3 is up there. You can't even finish the game properly on Easy difficulty and then Normal cranked it up a lot. Also, if you want the good ending then you have to beat the final boss in less than three minutes which is extremely hard given that he has five life bars, has cheap moves and flies around the screen constantly. I managed to fluke it once.
Jet Set Willy, impossible.
Ghouls n' Ghosts on the Mega Drive. I spent hours trying to finish it.As other have already said Streets of rage 3.Only completed it on easy and normal difficulty. Kid Chamelon went on for ages and you couldn't save it.