Experience points are required in order to level up and to gain Legendary Ranks. The amount of experience gained per battle depends upon the level of your opponent. Defeating opponents who have higher level than yourself will award more experience than defeating opponents whose levels are lower than yours. For team battles, take the sum of your team's levels and compare to the sum of the opposing team's levels.
Experience Boost can be bought for 50, 175 or 495 Varium from the Upgrade Shop. The boost doubles the amount of experience received from battles. The duration of the boost varies depending on the one you purchase and if you lose, the XP gained is not doubled.
During the times of 10:00AM-11:00AM Eastern Time and 10:00PM-11:00PM Eastern Time, all XP is doubled from the effects of Power Hour. If you lose, the XP is not doubled.
Experience by Level
Experience by Legendary Rank
Experience points gained in Legendary Mode, which is unlocked when a player reaches level 40, increases Legendary Rank instead of level. For each Legendary Rank, you need to earn 7500 experience to reach the next Legendary Rank.