Worst Port You've Ever Played

Saints row 2, Red Faction Guerrilla and Brutal Legend (at launch until now)

RE 4

Dark Souls: Prepare to Die Edition for the PC. The first nearly unplayable port I've played.

Crysis 1 for PS3. The horror.....

pc port of DMC 3

gta iv i think

Dark Souls and Saints Row 2

Saints Row 2 and GTA 4.

Resident Evil 5 I couldn't get more than 15 minutes in...I should probably retry with a controller...

Dark Souls is horrible if you don't install DSfix and DSMfix.

Worst port? I'd have to say Dead Rising 2. The worst thing that can happen is not being able to play a game you paid for.

GTA 4 :D

As everyone said already: GTA IV and Saints Row 2, they look aweful while lagging ^^

Resident Evil 5 since it wasmeant to be only a console game and was simply ported to PC without modifications. I was annoyed that you cannot aim and move at the same time.

Battlefield 3 on Xbox or Ps3. It just felt like the character was "too heavy". Good game tho.

Wish I had a better computer to run it tho

GTA 4 due the fact that it doesn't support win 7 and Dark Souls. Both is a great game. But GTA 4 Lags REALLY bad on compatibility mode. And Dark soul's just. I don't even know how to parry til i got to undead parish. Good thing some good guys made a fix for most problem.

Oh boy, hard decision :))) GTA IV / L.A. Noire / Need For Speed Most Wanted (the new one) / Saints Row 2. Not sure which one was worst.
And I also have a special list which includes basically every single Capcom action game I played. FFS, those guys really don't get it that PCs use keyboard? :|

It's a tie between Skyrim and Just Cause 2. Whatever the fuck they did with the mouse in Skyrim and the negative mouse acceleration in JC2 made them completely unplayable for me (I can't stand any game that fucks with the mouse, and ports just seem to love doing that).
The only good port I've ever seen was Saints Row the Third (and the Mass Effect series, but that was due to heavy coalesced.ini editing and because I loved the story so much (up to ME3's ending ofc)).

GTA 4.

Dead Island on PC.
Dungeon Defenders on my iPad, that shit was horrible

L.A. Noire is the worst I can think of. I just couldn't stand to play it yet, it just won't run smoothly enough.

Saints Row 2

Gta 4 wont even run w/o lag after I overclocked

Darksiders, Saints Row 2 and GTA IV come to mind.