Paper io is a real-time multiplayer game developed by Voodoo, a French mobile game publisher known for lightweight, highly addictive games. Released initially in 2016, the game has since evolved into a popular title across both browser platforms and mobile apps.

At its core, the objective of paper io is to claim as much space as possible on a shared map, competing against other players who are doing the same. Each player controls a square avatar that leaves behind a colored trail. By enclosing sections of the map and returning to your base, you convert that enclosed space into your territory.

But there’s a catch — you’re vulnerable whenever you're outside your base. If another player crosses your trail before you make it back, you lose. The result is a tense, fast-paced battle for map control.

Core Gameplay Features

1. Real-Time Competitive Multiplayer

You’re always playing against real or AI-controlled opponents, making each match dynamic and unpredictable.

2. Instant Play

No registration or lengthy tutorials — you jump straight into the game, which is ideal for casual gaming sessions.

3. Progressive Difficulty

As your territory grows, so do the risks. Larger empires are harder to defend and become prime targets for ambitious players.

4. Multiple Game Modes

The base game offers free-for-all gameplay, while later versions and updates include team play and special event modes.