Left-clicking or double-tapping the screen will accelerate it releasing the button will turn off boost. Compared to regular pellets, these pellets provide additional bulk. Pellets left behind by dead worms can be consumed by players to increase their growth. When a worm passes away, its body transforms into the shiny pellets (orbs) it had before passing away. The game is over if your snake explodes if its head touches any portion of another snake. Your main goal is to grow to be the longest worm in the arena and eliminate every other participant.
Slither.io is an awesome online game, that controls a snake, and feeds it glowing orbs to grow bigger.