When I bought my Half-Life in 1998 there was no Steam.
Try to activate your registration key into your Steam account. My 10 years old key works and Steam gives me Blue Shift, Opposing Force, Deathmatch, Counterstrike and some other Half-Life 1 engine based games as gift.
A forum community dedicated to overclocking enthusiasts and testing the limits of computing. Come join the discussion about computing, builds, collections, displays, models, styles, scales, specifications, reviews, accessories, classifieds, and more!