EXP Fusion is the main way Heroes can gain EXP, and in turn, level up. A hero "consumes" other heroes or EXP Eggs to gain EXP. All heroes and EXP Eggs give a certain amount of EXP, which depends on their rarity.
Heroes or EXP Eggs can also act as a temporary "storage" of EXP. When a hero is fused with another hero, any EXP that they had gained so far is completely transferred to the receiving hero, with additional EXP provided by that hero itself. There is no EXP lost in the fusion process, which means that it is advantageous to store EXP in Eggs or other heroes in order to provide more space in the Hero Vault .
During EXP fusion, players can use the Auto select function. This automatically selects all EXP Eggs and all level 1 heroes that are of the lower rarity. This handy function allows player to quickly fuse those unused low level heroes, usually obtained from free hires and reward chests.
EXP Gain Edit
|Hero Rarity||EXP Awarded||EXP Egg||EXP Awarded|
|Normal||20||Green EXP Egg||20|
|Good||100||Blue EXP Egg||100|
|Rare||400||Purple EXP Egg||500|
|Epic||1200||Gold EXP Egg||1500|
|Glory Egg||10||Coral EXP Egg||7500|