Played Half Life way back in 1998 when it first came out when I was still at school. That game was so different to anything before it. And mindblowing graphics (for 1998 anyway)
Some good memories and many hours of gaming.
Then Steam came around and I was into Counter Stike for a while.
Had a pretty long gap of not being on Steam and only since buying Portal 2 cheap on Steam rather than Xbox 360 have I rediscovered all the old games like Half Life that I used to play. Happy gaming :)