Paper.io is an online multiplayer game where players control a colored block that leaves a trail behind it. The main objective is to capture as much territory as possible by enclosing spaces with your trail. The more area you capture, the higher your score.

However, the game isn’t just about expanding your land. You must also protect yourself from other players. If someone crosses your trail before you return to your territory, you’re eliminated. Likewise, you can eliminate others by cutting across their trails.