Levels

Levels are a game mechanic in Diep.io. Players can level up by killing players or destroying Polygons. For every level up to level 28 you get a “Skill point”, after which you get a skill point at level 30, and then every 3 levels afterward. Skill points are used to upgrade your skills. In the skill tree you can use up to 7 total skill-points for each upgrade, with the exception of the Smasher and Landmine, who get up to 10 total skill points in Health Regen, Max Health, Body Damage, and Movement Speed, but lose all other trees (if points were invested into the other trees before, you will be refunded upon upgrading to Smasher).There are a maximum of 33 skill points. Upgrade yourself wisely according to your tank’s build.

Where you put your skill points changes your tank’s attributes. These attributes, can be found here: Stats.

An increase of levels/score also increase the size of the player's tank, Bullet Damage, Penatration, more health but slow down the player, thus a level 30 Tri-Angle is faster than a level 45 Tri-Angle, but a level 30 Tri-Angle is smaller than a level 45 Tri-Angle.

Leveling

 * It requires approximately:
 * 788 points to reach level 15.
 * 6,185 to reach level 30.
 * And 23,540 to reach level 45.
 * At each multiple of 15 you may upgrade, but the level cap is 45.
 * Should you die, you may respawn at half your previous level, or less, because of the new tweaks made to this mechanic.
 * As of August 13, you now always respawn at level 14 if you are level 14-27, because all half of those levels are below 14, makes it easier to have a good match.
 * It also seems, under Level 14, that if you respawn on the same odd level multiple times, your respawning level goes down by one every time. This is not fully confirmed.

Trivia
Contrary to popular belief, you do not spawn at half your previous level or  score.