Paper.io is a casual yet competitive io-style game where you draw lines to claim as much territory as possible, aiming to become the largest occupier on the map. You must control the character to move within the white zones and connect them back to their solid-line territory to claim land. However, you must be careful of the "tail" — if it is touched by another player, the game ends.

Expanding Territory

Expand your territory by drawing paths and marking areas, then filling in the blank spaces on the map with your representative color.

Avoid Being Left Behind

During movement and expansion, be sure to protect the trail you leave behind. If another player touches your trail, you will be eliminated immediately.

Eliminate the competition

By strategically maneuvering, try to make other players collide with your trajectory line to eliminate them from the game.

Top the Charts

The objective is to achieve the highest percentage of territory control or total score in the current match to reach the top of the leaderboard.

Core Mechanics: Territory Conquest

• Movement and Drawing: Players control a colored square moving across the map. While within the territory of their own color, they remain safe; once they leave the territory, a trail line (“tail”) is left behind.
• Enclosing Territory: After moving a certain distance, connect your trail back to existing territory to form a closed loop. All empty areas within the loop or any surrounding opponent's territory will automatically be claimed and converted to your color.

Elimination Rules: Risk and Safety

• Trail Vulnerability: When expanding beyond your territory, the exposed trail you leave behind is your fatal weakness.
• Touch and You're Out:
  • If another player's body or trail line touches yours, you are immediately eliminated and lose all occupied areas.
  • Accidentally touching your own trail line also results in elimination.

What is the objective of the game?

Capture as much territory as possible (achieve the highest percentage), become the player with the largest land area in this round, and survive until the very end.

How do you eliminate other players?

By touching the trail lines (tails) left behind by opponents during expansion. Note: Directly touching their physical territory will not eliminate them.

Why did I suddenly die?

This is because your trace line has been disrupted — either you accidentally touched your own line, or another player touched your line.

Can you seize someone else's territory?

Yes. Through enclosure operations, when the closed loop you form surrounds an opponent's territory, that area will be absorbed by you and converted to your color.