Paper.io

Paper.io is a popular 2016 online multiplayer free-to-play hyper-casual mobile arcade video game developed by Voodoo for iOS and Android. A browser version of the game was made by Kevin Games at the domain https://paper-io.com. The game is similar to splix.io, and the objective is to cover 100% of a piece of paper with your paint, by drawing lines outward from your territory, and returning back, which results in the land covered inside your line becoming part of your territory. You can crash into opponent lines to kill them, as well as your own line to kill yourself.

Both the mobile and browser versions of the game use bots for the opposing "players", but a real live multiplayer version exists called Paperio live.

Versions
Paper.io is splix.io-like mobile game by Voodoo. A browser version was developed by Kevin Games, which features several game modes, minigames and challenges, including a "Party Mode" which allows you to play online with your friends.

Paper.io 2
'' Paper.io 2 is the second Paper.io mobile game developed by Voodoo, in which the paper is a circle rather than a square, and you can move in any direction compared to the original where you could only move up, down, left and right. There is also a minimap which shows you your territory. The browser version features game modes including "World Map", where you play on a political map of the world, and the objective is to take over the entire map by capturing cities and taking control of as much land as possible to gain points to increase score, based on which you can be placed on the leaderboard.

Paper.io 3D
'' Paper.io 3D is the third Paper.io mobile game developed by Voodoo. It is a three-dimensional version of Paper.io 2, where you play on spinning 3D shapes, like a heart, with a rotating camera which follows your direction. It is impossible to capture the entire shape, and the game automatically kills you once the timer is over. It also has a spinning minimap.

Paperio.live
Paperio live is an online multiplayer version of Paper.io 2, where you can play on 6 servers with 3 game modes - FFA Classic, Speed and Jet Motor. You can earn scores based on your area captured, kills and time played, and you can be placed on the leaderboards based on your score.

Skins
'' Skins are available on all official Paper.io games, and decides the way your paint and character icon looks. The default skins are simply just colors, but you can unlock custom skins by completing objectives for each locked skin. Some skins are based on other video games, including Freddy, Impostor (based on Among Us) and Cyber Punk.