where is the Steam category of the game?

What is a demo and where to upload it and where to get it from??? Please explain

Well, they also found a place for the modifications, so why not add Half Life Xash3D? There is a speedrun assembly for Xash HL1.

I am not comfortable doing this on a computer, so I started speedrun on the phone and it works out pretty well for me. Now I’m thinking about uploading my speedrun to this site.

Help pls