Diep.io review

Diep.io adds real build choices to the .io formula. The App Store listing, which bills it as coming from the creator of Agar.io, describes huge servers with dozens of players, where you destroy blocks and other players to earn XP, pick which stats to raise, such as bullet damage or movement speed, and upgrade into new tank classes with machine guns, guided missiles or cannons in every direction. The web version shows team modes such as 2 Teams, Custom Games, a VIP option and a skin shop that uses a currency called Shinies. Everything core is free to play. Diep.io ranks below Agar.io only on ease, because the upgrade tree takes a few rounds to learn, and its iPhone app has a 3.8 rating from 20K ratings, with reviewers noting fewer tank classes on mobile than on PC. Play it in a browser for the full version. We compared documented features and published prices.

Who it is for

Players who like build choices and upgrades in a quick arena game.

Price

Free to play; the web version offers optional VIP and a skin shop.

Free to play!
Quoted from the vendor pricing page on November 10, 2026.

Key features

• Destroy blocks and players to earn XP
• Choose which stats to raise, such as bullet damage or speed
• Upgrade into many tank classes
• Team and custom game modes on the web
• Skins bought with Shinies in the shop

Strengths and weaknesses

• Strength: Upgrade choices give each round a different build
• Strength: Free, with dozens of players per server
• Strength: Also on iPhone and iPad
• Weakness: App Store rating is 3.8 from 20K ratings
• Weakness: Reviews say mobile has fewer tank classes than PC
• Weakness: The iOS app was last updated in 2024

Key facts

• Price: Free to play
• Developer: VexxusArts Ltd (iOS app)
• Web modes: Includes 2 Teams and Custom Games
• App Store rating: 3.8 from 20K ratings
• Age rating: 9+

Where it ranks

Diep.io is No. 6 in our Best .io Games verdict.