What was your first game on steam?
Total War: Shogun 2.
I got steam in 2004 because of an ati bundle that came with a graphics card. It gave me half life, blue shift, opposing force, ricochet, day of defeat, half life 2, portal, cs 1.6, css, and half life death match for free.
iirc it was DotA 2 beta
Team Fortress 2
Half Life 2
Probably Team Fortress 2? Or it was this top down, co-op alien shooter... I forget the name, though.
Counter Strike: Source
Vampire - Bloodlines