In KAYO, players rely on a main metric to evolve their fighter, and that is XP

XP are obtained at the end of each round, each fight, each tournament. Whether one wins or loses, they will gain some amount of experience.

XP is gained as follows:

For free tournaments: (min: 60XP, max: 220XP per fight)

For premium tournaments: (min: 300XP, max: 1100XP per fight)

In the case of tournaments with multiple fights, an extra 10% of total XP earned is added for each additional fight

Experience is cumulated and allows fighters to reach new levels. New levels are reached on a regular basis, the higher the level though, the more difficult it will be to level up. As the levels curve follows a E(sqrt(xp/1000))function. Concretely: