Your most regretful purchase from Steam?

Titan Quest, never played problably never will and I'm sure that is a great game but i continually have "more urgent" games to play

Red Orchestra 2....

I love Killing Floor, so I thought hey! This game must be good aswell...Nevermind bros, nevermind...

TM:U is 20x better and gives way more content than the free version does, it's well worth the money ._.
I probably regret Borderlands mostly because it just ain't my kind of game

Ubisoft crap

Homefront... No one play it right now (maybe 60 users on the servers) :\

CoD MW2, Dead Island & Fable III. Bought them all from sales but even the lowered prices were too much.

Foreign Legions: Buckets of Blood.

None, I love all of my games.

Nexuiz I preordered it now it's on sale ._.

Dark Souls. I traded for ROW version (I'm from Russia), now I have nightmares in which the game doesn't work and demands that I buy region-locked copy.

The original Flatout. I spent less than 2 dollars on it. I was thinking of another game when I bought it.

Probably would have to be Devil May Cry 3: Special Edition. Probably THE worst fucking port ever, and I found out after I purchased it and going to Steam forums to find out why it ran like shit.

On The Rain-Slick Precipice of Darkness Episodes 1 &2.

Call of Duty: Black Ops. That was the last time I will ever buy into the hype.

Second place is Counterstrike: Source, followed by Day of Defeat: Source

STALKER: Shadow of Chernobyl.
Even with troubleshooting I can't get it to work with Windows 7. I've never been able to play it.

Duke Nukem Forever never should have wasted my money on that shit. showing boobs every mission isn't going to make the game better. i feel sorry for the people that waited 15 years for that.

Europa Universalis. It's not bad at all, but WAAAAY too complex for my simplistic little brain.

iggest regret is still my first non-Valve purchase: Rag Doll Kung Fu

Duke Nukem Forever

Max Payne 3. Not that is a bad game or anything but it's not what I thought it'd be so I rarely play it, I haven't even finished it and everytime I try it I just sigh and stop playting it. Wish I had waited till it's on sale or something. Oh well, atleast I got MP1+2 and L.A. Noire out of it.

I'm pissed off about a lot of them actually...

Dinner Date I got in a Daily Deal ages ago and it isn't even a game - more a "eating dinner and thinking simulator".

Blueberry Garden looks like a fun artsy indie game but comes across as an unfinished Flash project from Newgrounds.

Dungeon Defenders is the epitome of "the game isn't complete unless you buy all of the crappy DLC!" gaming and is just a flashy looking, yet pathetically average tower defence game.

Magicka is great, but is so poorly optimised I am yet to play it at full speed on any computer - regardless of specs and despite countless updates since its launch.

Pixeljunk: Eden is so pretentious that it forgot that at some point a game has to be fun to remain engaging.

The X-COM collection - Nothing like having to configure DOSBox yourself after purchasing a game from Steam! I may as well have pirated the X-COM games, thanks Steam.

Your Doodles Are Bugged is just... awful. Got this one in a bundle though, so can't really complain.

I probably regret all of my Steam library, especially when realising that if Steam stops working tomorrow, I no longer have any legal right to play any of the games within it.