XP, or Experience Points, are gained only when users are logged into Agar.io using a Facebook or a Google account. XP that is gained will contribute to reaching higher levels and acquiring new veteran skins. The amount of XP required to advance to the next level increases with every level. For example, level one requires very little XP compared to level 99.
The amount of XP that you earn per game depends on two things: Mass and Splits.
Mass[]
The more mass you have, the more XP you earn per second. If you have 500 mass you will generate more XP per second than if you have 250 mass. If you are twice as big you only get about 30-40% more XP.
Splits[]
The more you split, the more XP you gain per cell. Let us say for example you have a cell with 500 mass, you will gain double the XP if you have two 250 cells.
Notes[]
- This information is collected from many tests. The way that XP mechanics fully works has not been released.