Well I'm old and don't really game anymore, but for me it was the original Halflife. The story sucked me in, not to mention the fact that I was running it on my brand new PC, which I believe was one of the first Pentium IIIs, so I could run it at the max resolution and the graphics were amazing!. I think it was 1024x768, on a huge 17" CRT monitor!
Well I'm old and don't really game anymore, but for me it was the original Halflife. The story sucked me in, not to mention the fact that I was running it on my brand new PC, which I believe was one of the first Pentium IIIs, so I could run it at the max resolution and the graphics were amazing!. I think it was 1024x768, on a huge 17" CRT monitor!