To summarize:
Steam’s (included with Half-Life purchase) can be modded to mimic CS 1.4: Counter Strike 1.4 Cd Key Pc Extra Quality
Version 1.4, released in April 2002, was a watershed moment. It introduced significant changes that defined the "modern" feel of the game, separating the casual fun of early beta versions from the tactical shooter it would become. released in April 2002