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Game reference

Diep.io

A multiplayer tank game where you start with a basic tank and upgrade it through a class system by destroying objects and opponents.

Play

Use your mouse to aim and shoot, and WASD or arrow keys to move around the battlefield. Destroy geometric shapes and other tanks to earn experience points, then spend them on speed, health, and damage.

How to play

Mouse — aim and shoot; WASD or arrow keys — movement.

Our verdict

Diep.io is one of the more substantial entries in the .io shooter genre, offering a genuine tank upgrade tree with multiple class branches that sets it apart from simpler arena games. Sessions start slow while you grind shapes for XP, but the payoff of hitting a top-tier class and surviving against full lobbies is satisfying. Team modes (2 Teams, 4 Teams, Capture the Flag) add real tactical depth that FFA alone can't provide.

Pros

  • Branching tank upgrade system with multiple distinct classes gives each run a different feel
  • Several game modes including team-based and objective modes keep variety high
  • Instantly playable in any browser — enter a name and you are in within seconds
  • Dying lets you keep some XP, so the loss of progress is softer than in most .io games

Cons

  • Early levels are noticeably slow — you spend several minutes shooting harmless shapes before the action gets interesting
  • A maxed-out player can one-shot you with almost no counterplay when you are low level
  • Player counts have declined since 2016 peak, so some servers feel thin outside peak hours

Frequently asked questions

Is Diep.io completely free to play?
Yes. The browser version at diep.io is free with no paywalls. A cosmetic shop exists but does not affect gameplay.
What is the fastest way to level up early?
Farm the yellow pentagon clusters that appear near the center of the map — they give far more XP than triangles or squares. Avoid fighting other tanks until you reach level 15+.
Which tank class is best for beginners?
Twin or Machine Gun are solid starter upgrades because high fire rate lets you hit moving targets more easily. Avoid Overseer-branch classes until you understand the arena flow.
Can I play Diep.io on a phone?
The browser version works on mobile but is designed for mouse and keyboard. Official mobile apps existed through Miniclip but are no longer maintained; the browser version is the safest option today.