A swipe can start anywhere on the page, not just on the canvas.
Double-tap the canvas or press R to restart after a game over.
Double-tap or R also resumes play after an announcement, or after a free life saves you - always, on every device. Steering alone never resumes it, so a stray swipe or keypress can't set you moving again by itself.
Rules
Eat the apples to grow and score points.
Running into a wall or a rotten apple ends the run.
Two difficulty levels change how often a rotten apple appears - Viper never spawns one, Anaconda spawns one on half the apples you eat. Speed is the same either way, driven purely by score.
Each difficulty has its own global top-5 leaderboard, shared by everyone who plays.
Make the top 5 and you can add an optional nickname.
Whenever the snake is regrowing, no apple appears until it's back to full length.
Fairytales
Some say a snake that bites its own tail doesn't die.
Beware the serpent-king whose gaze alone can turn you to stone.
Legends also speak of a serpent that grows long enough to encircle the world.