There is not much to specify for the question, its really simple: Which title is the first game you have purchased on Steam? Was it a good decision? How much did you pay? When was it and what device? You don’t have to answer all questions, this is just a fun discussion to have.
You can check your history: https://store.steampowered.com/account/history/ Edit: Some in the comments pointed out that the purchase history doesn’t go back all to the beginnings of Steam. So if you purchased something earlier, it won’t be listed on your account.
(I reply with my game too.)
Only goes back to 2009 and I’m pretty sure I bought something between 2003 and 2008. Maybe I just played all the games I had purchased elsewhere and added to steam, such as the Counterstrike, Orange Box, Dawn of War, and a few others I can’t recall. I ended up tossing most of the cases once steam was reliable and I wasn’t likely to go back and play.
First one listed is Left 4 Dead and that was a fantastic value. Many hours playing that and LFD2. Scrolling through the list and I don’t feel bad about not playing most of them for very long as the vast majority were 75% or more off.
I didn’t realize how old the first Dawn of War was (2000). Looking at Wikipedia, ah, Jeremy Soule is the composer. Probably best known for the score on Skyrim, but I also remember him from a Super Nintendo game Secret of Evermore.