Your most regretful purchase from Steam?

Left 4 Dead 2.

Dirt 3. Those cars are like soap.

Magicka: Vietnam

I've bought many stupid, even bad games on Steam (Duke Nukem Forever... even Revelations 2012), but I knew they were bad. Magicka Vietnam... well, it looked like a cool, small DLC to a cool game.... well, it was small, that's for sure - 2 not so original levels, hit and miss humour and a bunch of weapons - wasn't worth the money.

Eventually GTA IV.

Gotham City Imposters (great game but GFWL killed it)

Aside from Orion Dino Beatdown, I would have to give a notable mention to a lot of the indie games I pick up. Magicka is a prime example of wasted money, for me.

ARMA 2, not because it's bad, it's just my computer can barely run it on minimum.

Red Orchestra 2.

Since the beta there were some serious issues, which we were all hoping would get fixed soon enough (that, with the inclusion of actual servers that could handle 64 players), unfortunately these horrible mistakes/bugs were not fixed by the game launch, nor by the week, nor by the month. Being my first preorder, i gave it the benefit of the doubt, now i've learned from my mistake.

Saints Row: The Third. Its a good game, but just goddamn, its nothing compared to Saints Row 2. The story and all seriousness was just thrown out the window. I just couldn't get into it as well as SR2.

Floras Fruit Farm

Sanctum or Magicka. Sanctum is just really, really drab and boring compared to any other TD game. Magicka could have been fun but grouping with anyone in MP is just a bunch of people 1000x farther than I am so new players are just dead weight.

Binding of Isaac! WHO PAYS FOR FLASH GAMES GODDAMNIT?!

Who Wants To Be A Millionaire

EYE divine cybermancy trailer looked great game is kind of what...

Wish I could go back in time so I don't waste my money on Terraria. Yes, I simply hate it, boring and pointless farming with no objectives or story. Just sandbox mode, boring as fuck.

Definitely Brink. And I made it even worse when buying all DLC...

Modern Warfare 3 for sure!

Buying a bunch of saints row and trading them. Yes when they were on sale :(

splinter cell conviction

S.T.A.L.K.E.R. (all three) don't get me wrong I love the games (most of my hours were clocked in offline) its just the last time I played SOC it melted my video card to my motherboard because it was driving my GPU up to 100% on the freaking menu alone.

Dungeons of Dredmor. Not because the game isn't good (it's great), but because it came out on Desura later so I wish I had waited.

90% of what I've bought from the sales because I have so many that I haven't even downloaded ever let alone played and then watched most of them go on sale for a fraction of what I paid for them on sale.

Terraria .

max payne 3

Probably fallout 3 goty since its such a bitch to get working on windows 7. Took me 2 hours to find all the fixes you have to do. And it crashes if I have more than 1 dlc enabled so I don't know what I will do when I want to do those <_<

Audiosurf..