Hl2 back when steam was vilified as the end of gaming because it took physical copies out of the hands of owners.
Steam now is the resurgence of pc gaming, took 10+ years but steam is now what holds so many pc gamers together.
Now if only we can convince valve to finish hl3 or at least finish hl2
Back in my day Half-Life and it's free mods were the only games available on Steam. People also generally hated the switch to Steam at first, now it's hard to imagine a world without it.
Yup HL2 here too. Really, really didn't appreciate having to install extra software just to play a game, at the time, which shows how remarkably Valve have turned the Steam experience on it's head.
Pretty sure i preordered HL2 through steam in some gold package that came with DoD and Cs source and a couple others. At the time i think it was one of the 1st games sold in the store. You could buy just the game a bronze bundle a silver or a gold. I made my mom get me the gold and had to explain to her that it wasnt a online scam.
I made the transition of cs 1.5 to 1.6, so 2002 I guess?
however I lost the account recently, because I deleted my email address years later in 2009 and my backup email was a letibit email address and letibit was closed because of the whole Snowden-prism-nsa thing.
the support couldn't help me because I used some made up names and dates registrating the account back in 2002, because I was a minor back then.
I use may connected psn account now for Dota and I never bought something from the steam store.
I haven't dug through the whole thread; others probably have me beat.
Oldest for me is September 18, 2003. Half-Life.
Edit: It seems that September 12, 2003 is the earliest possible from what I've seen others post. I remember being in early in the Steam beta and doing everything day one, but my HL date isn't reflecting that, and CS isn't displaying a date purchased (I'm assuming it would register the same as HL though). Haven't thought about those early days in a long while, when Steam was green and how weird it felt not running CS on its own, etc. It was exciting. For context I was 14 at the time.
If I could only find the receipt for when I purchased HL on CD-ROM though...
I remember I was angry at valve because of the obligatory online activation and I didn't had internet at home back in 2004. I convinced my parents to get me internet only in 2006 and I clearly remember that one of the first thing I did was going out and buy Half Life 2.
The first purchase on Steam was Episode 1 (Jan 29 2008).