What was YOUR first game you got on steam? Small GA added.

Space Hack, from a mass giveaway

PS: Dark Messiah is great.- Played it some time ago, and worked pretty well

Warhammer 40,000: Dawn of War with all its expansions (The first one). I always prefered DRM free and avoided steam until a friend sent me a link that a certain place called humble bundle was giving away the entire collection for free. That was all it took for me to crack and give in and make a steam account and now look at me. Lol.

Portal automatically added after buying alienware in 2010

Left 4 Dead 2

Half Life (1), and then Counter-Strike

Portal 2. My friend gifted it to me so we can play together and that's how my downward spiral to PC gaming begun.

Max Payne and Max Payne 2. I had played them way before buying them on steam, but wanted to play them again.
That was the beginning of this journey...

Terraria, still my most played game (on steam) to this day

Torchlight

Bioshock and Half Life 2 back in 2008

Limbo

Orange Box

Half-Life 2.

Counter-Strike: Source but a retail copy that gave this package: https://steamdb.info/sub/22/apps/

Empire : Total War. Still a very good strategy game! For me the first game that had to be activated on Steam.

Terraria🌴🏡🎄🔨

Apparently, Aura Kingdom.
I think I added it because it was free. /cough

Half-Life Two

Just Cause 2, of course. Some here may remember that it was my favorite game for a very long time.

Half-Life 2 (Nov. 2004)

Hatoful Boyfriend xD

Chivalry and I didn't play it too much.

The Orange Box, so Portal / Team Fortress 2 / Half-Life 2. Only really bought it for Portal though, and was kind of pissed off when I found out I needed to sign up to an online service (Steam) to use my disc.