Team Deathmatch

Team Deathmatch, TDM or Team DM, is a game mode in Diep.io, where players work in two teams rather than fighting against each other. This game mode requires more EXP to level up as compared to Domination or Mothership.

Spawn
The player either spawns either in the blue strip that takes up the left side of the arena, or the red strip that takes up the right side of the arena. This determines their team, and they duke it out in the middle. Players of one team cannot shoot into the opposing team’s Base, as enemy bullets are instantly destroyed upon contact with it. Players also cannot enter the enemy team’s spawn area, as they will be instantly stopped and will begin taking rapid and high damage bursts against the invisible wall (refer to the "Trivia" section regarding why there is an invisible wall in addition to the visible border of the neutral map color and the spawn room).

Protectors
The spawn areas are defended by Protectors, tiny triangles (which are even smaller than Triangle Drones and Red Triangles) with unlimited health who can chase down any player from the other team but will turn back at a certain point.

There are 15 groups of 2 Protectors spread over each team’s Base. Each group is circling around its own area, so the whole Base can be protected.

The Protectors will not leave their team’s zone unless an opponent is within proximity. Protectors continue to seek until any opponent is out of range. Although there consists methods of evasion, the simplest of which is to run until you're out of range from the Protectors.

Players
The players are divided into two teams, which are red and blue. Tanks of the same team can't directly deal damage to each other, and they can 'push' each other without having to take any body damage.

Arena Closers
Arena Closers only appear on this map if any one of the following requirements are met:


 * New update.
 * Certain number of player kills.
 * Certain length of time any team has been dominating the Leaderboard; all 10 slots have to be filled before the countdown begins.

Map

 * The blue strip located on the left marks the spawning area for the Blue team.
 * The red strip located on the right marks the spawning area for the Red team.

Trivia

 * All the other features of gameplay are similar to FFA. For example The Pentagon Nest and the Crashers protecting it.
 * Before July 14th, the team areas were blue in the top left, and red in the bottom right.
 * Protectors can destroy Polygons, assuming that it either spawned in the Guardian's path or was pushed into it.
 * Although there is the visible color border of the spawn room and the neutral map's color, the actual invisible wall of the spawn that blocks/damages enemy players from intruding into the base is slightly behind the visible color border.
 * Note that the invisible barrier that only blocks bullets is placed directly on top of the visible color border, and not where the player collision wall is.
 * Also note that when a player contacts and continues ramming into the player collision wall, they will rapidly be pushed downwards towards the bottom of the map (even if they were moving upwards diagonally). It is unknown why downwards is the forced direction instead of just recoiling the player away from the wall.
 * There has been a rumor that if you are in low health, and move quickly into base and out, you will recieve super fast regen health. Tested by LitafNinja: This works only if it's your base, also you must wait at least 6-8 seconds outside your base, then move in and out, then if you start moving quickly away from your base, you will gain faster regeneration. But as regular regeneration starts at 10 seconds, this method is only effective when you're against a wall and the other team is dominating. This is assuming you have ZERO Skill Points invested in regeneration.