What's the first steam game you ever played? How long ago?

I think my First Game i ever Played was Left 4 dead, and then my second game i got was Prototype.

Portal 2, because I got a 75% off coupon for it.

TF2, got Steam originally for it.

Left 4 dead, then Portal

Garry's Mod

portal, cuz it was free

Alien Swarm I guess.

Counter Strike 1.6 of course! Back in 2004 when I bought counter strike condition zero pack in stores and apperantly it needed steam for online play.

Half-Life 2

ati/nvidia promo (hl2 lost coast, hl2 deathmatch, portal)
the first game I played on steam is half-life 2 deathmatch 4 years ago

F.3.A.R - went to the local game store and bought it. also i had no idea steam existed until i bought the game

Portal, got it for free and it was my only game until I was gifted some bundles.

Team Fortress 2, seldom play it now...

Team Fortress 2.

Counter-Strike, nine years ago. Crikey.

Faerie Solitaire.

Left 4 Dead.

Dota 2 a little more than a year ago. I'm almost starting to get tired of the answer always being Dota 2.. xD

Broken Sword 2, then flipping a table once I saw it's the remastered version.

Left 4 Dead.

Now didn't play anymore, due to the awful L4D community.

Portal, two years ago. (Counter-strike 1.6 non-steam version, 10 years ago)

Team fortress 2, and I first played it in 24 of desember 2009. And now I got a playtime of 608 hours :3

Half-Life and TFC

Half-life when it's was first released