um you buy half life over steam...I have allready downloaded steam but it is not in the list and where do I download half life?
well the good thing about it is its cheap its like 10 Bucks or something lol well yeah grega's Right you will be haveing a pretty sure hard time finding such a game that is so old.....Half Life is a game from 1998. Its engine is an update of the old Quake 2 engine. And that engine is required to run ESF.
You can buy it directly from STEAM. As long as you make sure its Half Life 1 and not Half Life Source or Half Life 2.
As for stores i think youll have a hard time finding a store that sels such an old game im afraid :s