Halo Championship Series (HCS) is a professional Halo league sponsored by Microsoft and 343 Industries. It is governed by Electronic Sports League, more commonly referred to as ESL. Seasons 1 and 2 ran on Halo: The Master Chief Collection, specifically its remake of Halo 2. In August 2015 Microsoft announced it would be increasing the total prize pool of the HCS to $1 million USD, for the newly announced Halo World Championship, which will be the debut event for Halo 5: Guardians. This prize pool was later announced to be crowd-funded, which later resulted in Major League Gaming announcing that the prize pool had climbed to $2 million USD. Later that week, 343 announced that the prize pool was locked at $2.5 million USD. This was confirmed to give the winners, later announced to be Counter