Counter-strike was definitively a mod, you had to install it in the same folder as Half-Life and start it with 'hl.exe -game cstrike'. It became a standalone ga

Counter-strike was definitively a mod, you had to install it in the same folder as Half-Life and start it with 'hl.exe -game cstrike'. It became a standalone game later with the retail release. edit: https://developer.valvesoftware.com/wiki/Counter-Strike#Versions https://developer.valvesoftware.com/wiki/Counter-Strike#Vers...