Valve Major Championships, usually shortened to Majors, are the championship events that sit at the top of the Counter-Strike calendar. They began in 2013 at DreamHack Winter and became the benchmark event for every roster that wants to define an era rather than just win another tournament weekend.
The format, qualification path, and even the names of the stages have changed several times since then. Prize pools grew from the original $250,000 tier to the modern $1,250,000 level, the team count expanded from 16 to 24 and then to 32, and Valve's own ranking system became central to who gets into the event.
Major history can be read as a series of structural shifts: formats changed, qualification moved from the old Legend system toward ranking-led invites, the active map pool kept rotating, and the championship line kept expanding from DreamHack Winter 2013 into the current CS2 era.