4 Teams is a gamemode in Diep.io, where players work in four opposing teams rather than fighting against each other. This gamemode has regular EXP gain and is one of the two versions of the expired Team Deathmatch gamemode.
The player will spawn in either a blue, red, green (formerly brown), or purple corner. This determines their team, and they duke it out in the middle. Players of one team cannot shoot into an opposing team’s Base, as enemy Bullets are instantly destroyed upon contact with it. Players also cannot enter any enemy team’s Base, as they will begin taking rapid and high damage bursts (if the Protectors don’t get them first).
- The blue corner located on the top left marks the spawning area for the Blue team.
- The red corner located on the bottom right marks the spawning area for the Red team.
- The purple corner located on the top right marks the spawning area for the Purple team.
- The green (formerly brown) corner located on the bottom left marks the spawning area for the Green (formerly brown) team.
The players are divided into four teams, which are red, blue, purple and green. Tanks of the same team can't kill each other and can only kill tanks on enemy teams. If a tank on your team fires at your tank, the bullets will go through you. If a player on your team rams you, that player will bump into you.
The spawn areas are defended by Protectors, small triangles (which are even smaller than Triangles and Drones) with a very large health pool which can chase down any player from the other team but will turn back at a certain point.
There are 12 Protectors that will be together in the middle of the base (similar to the old TDM).
The Protectors will not leave their team’s zone unless an opponent is within their proximity. Protectors continue to seek until any opponent is out of their range. Although there consists methods of evasion, the simplest of which is to run away until you’re out of range from the Protectors.
Before August 22nd, 2016, Protectors didn’t target any bosses, but now they target the Fallen ones and Polygon-based ones if provoked. This usually leads to nobody actually killing the boss, instead saying “Boss Name was killed by an unnamed tank”, due to the Protectors lacking an in-game name.
Arena Closers only appear on this map if any one of the following requirements are met:
- Diep.io is being updated/changed.
- Certain number of player kills.
- Certain length of time any team has been dominating the Scoreboard. All 10 slots have to be filled by this team before the countdown begins.
- The 18th September’s update split Team Deathmatch into this game mode and 2 Teams.
- Before, being sent to 2 Teams or 4 Teams was random. Today, you just select which TDM mode the player prefers to play.
- All the other features of gameplay are similar to FFA. For example, The Pentagon Nest and the Crashers protecting it.
- Protectors can destroy Polygons, assuming that it either spawned in the Protector’s path or was pushed into it. They will not seek polygons themselves.
- 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 the base and out, you will recieve super fast regen health. 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.
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