Slither.io

Slither.io is a mobile game played on Cell Outs.

Game Information
The objective of the game is to control a worm around a wide area and eat pellets, defeating and consuming other players to gain mass to grow the largest and longest in the game. Once the player starts the game and is spawned into the virtual world, their avatar cannot stop moving forward. If the player's worm's head collides into a part of another worm, the player will die. The defeated avatar's body turns into bright, shining pellets for other players to consume. As much pellets as it takes for the equivalent amount of mass as the worm had exactly before its death will be transmuted. These pellets that remain from "death" of an avatar will correspond to the color of the avatar itself, and are both brighter and bigger than "normal" pellets, which spawn naturally throughout the world. Normal pellets do not give as much mass as pellets dropped from other worms. "Chase" pellets will appear individually in various places of the world, and when eaten, give a greater amount of mass than pellets dropped by other worms. Chase pellets avoid worms and flee when they draw near. Chase pellets can be obtained by boosting.

By pressing and holding the space bar or left/right mouse button (on mobile, double-tapping the touchscreen), the player can use their boost, which causes the avatar to speed up. When the button (or, on mobile, the finger on the touchscreen) is released, the worm will stop using its boost. When a player uses their boost, the worm loses some mass, causing the worm's size to shrink slightly, with the mass that is lost from the boost appearing as a line of small pellets where the boost was used. The mass lost can be regained by consuming the pellets. Similar to pellets dropped from defeated avatars, the boost pellets correspond to the color of the avatar. The boost feature is useful to outmaneuver and defeat opponents. A common strategy that is used by players to defeat opponents is of the player's avatar coiling around the opponent's in a loop, until the opponent, trapped in the loop, crashes into the player.