What was your first steam game?

team fisting 2

it was Dawn of War II. still played : )

CoD: MW2

back when I was young and clueless.

MW3

Counter Strike ;) I've played it for few hours only.

metro 2033

Valve complete pack...so lots.

Portal 2 - Two Pack

CS anthology :p

Portal Slice coz was free, but later Left 4 Dead 2

Half-Life Anthology (hl 1 + its addons)

Saint Row 2

Payday the heist. Hell yes I can't wait for the upcoming sequel.

Star Wars The Force Unleashed Ultimate Sith Edition.

Dota 2. It was after they mailed me a beta key then only I started to look into steam. Before that I don't know what is steam and pay no attention to it.

The Orange Box retail.

Portal

Half Life 2, 7 years ago.

Counter-Strike 1 Anthology

Garry's mod about 2,5 years and when I tried to play it I got a message saying "you need a source engine game" so I quickly bought Half-Life 2 deathmatch because it was cheap :D

half-life

Retail edition of The Orange Box followed by Batman Arkham Asylum GOTY

Half Life 2

If memory serves it was Portal.