Recognizing these flaws, Valve used 1.4 as a rapid-fire testbed. Just a few months later, in June 2002, they released . Version 1.5 was essentially a polished, highly optimized refinement of 1.4. It fixed the movement glitches, stabilized the netcode, and became the definitive competitive version of the game until the release of 1.6 in 2003. The Legacy of 1.4
The core gameplay changes in 1.4 were extensive and intentional: counter strike 1.4