Steer: move the mouse or use W A S D.

Boost: click or hold Space. Lasts 2 seconds, refills in 6.

Steer: drag your finger across the screen.

Boost: hold the button at the bottom right. Lasts 2 seconds, refills in 6.

Grow: collect cubes equal to or smaller than your head; matching ones merge. Your score is your biggest cube, the one at the front.

Hunt: eat snakes with smaller heads and snatch small pieces of their tails. Run from bigger ones.

King hunt: when the leader pulls far ahead, a golden target appears. Whoever takes it hunts for 12 seconds; ramming the leader’s head shrinks it to twice the size of the next snake.

Mines: a few mines lie on the field. Touch one with your head and you blow up; only a shield saves you.

Chat: the bubble at the bottom left, or Enter. Messages disappear after a minute.