December 2001 saw the game’s first major, CPL Winter, with the lion’s share of the $150,000 prize pool going to Potti and HeatoN’s victorious Ninjas in Pyjamas squad. 2002 saw three more unofficial Majors, a CPL Summer, Winter and World Cyber Games in Korea. In 2003, another $100,000+ tournament began with the ESWC.
2003 was also the year of the last major CS update, version ‘1.6’, where CS was ported to Steam. Steam was not Valve’s only big project at the time, though - 2004 was the year of Half-Life 2, on the new Source engine, and CS would also get a sequel: Counter-Strike: Source.
Yet despite the graphical improvement, most of Counter-Strike’s top professionals did not swap to the new game. They had worked too hard to reach their skill ceiling in the original game - a skill ceiling they believed Valve had made lower with Source - to give that up.
So, despite the release of Source, 1.6 remained the game of choice for Potti, f0rest, NEO, Get_RiGhT, and co - aside from the bizarre, in hindsight, WCG in 2004 that was played on Condition Zero. The prize money continued to flow, with ESWC 2006 setting a new record of $160,000 as the esport enjoyed its golden years.
The recession in 2008, though, spelled bad news in the short term for CS. In 1.6, CPL went bankrupt in 2007 and ESWC followed in 2009. However, the real damage was done in Counter-Strike: Source.
Source had attracted some 1.6 talent like the Brazilian cogu and HeatoN (as a manager) along with new names like RattlesnK, HenryG, and Fifflaren and it seemed to get the prize pools to match with the launch of the Championship Gaming Series in 2007. The franchise league’s prize pool dwarfed all that had come before: Chicago Chimera, victors of the inaugural CGS World Championship, won $250,000, nearly double the prize pool for the whole field of most 1.6 Majors.
But, along with the funding from DirectTV, BSkyB, and StarTV, came changes to the traditional CS format. There was a draft for players, models were edited to have brightly coloured sports jerseys and all games would be best of ones, with every game lasting 18 rounds, whether that be 14-4 or 10-8.