slither.io

slither.io centers on online matches where players control a growing slither and compete to become the longest. The central loop is direct: move around other players, avoid having your head touch them, and look for chances to make them collide with you. When another slither hits your body, it explodes, leaving remains that you can consume to increase your length.

The game’s elimination rule also creates opportunities for smaller players. Size does not prevent a careful ambush, since you can swerve in front of a much larger opponent and cause them to crash into you. A successful encounter can turn that defeated player’s remains into further growth, while a collision involving your own head ends the game. The supplied information describes online play and this growing-versus-avoiding gameplay loop, but does not specify additional modes or a broader progression system.