If you mean purchased via the Steam Store it was Borderlands 2. The very first game I played via steam was Day of Defeat.

Noticed your 10 years of service... what was the first game you purchased?

im not frickin insisting, ugh, you're even dumber than my stepdad, how the hell can you not know this sorta stuff. im demanding to fondle it, and kiss it, and rub it all over my cheeks and my face too, and maybe give it a pet name (not sure yet) and then you ejaculate all over me, i want to bathe and swim and drown in your chowder. i hope this proves enlightening

Why do you insist on wanting to fondle my man sausage? Leave me alone!

i know you're not gay and interested in my sexual advances, which is why i keep advancing sexually towards you while NOT calling you gay, because i know you, a not-gay man, are interested in my sex. im glad we could touch base here

more like REVERAND GROGNARD, CHIEF CHOAD INSPECTOR. haha. but seriously folks... what i just said