Pilot a snake over a stylized 3D Earth, steering along great-circle arcs to the city you're given. It's a test of orientation: every leg has a par time (the straightest, fastest line), and arriving fast earns a higher rating — Amazing, Great, OK — for a bigger score multiplier. Reach cities to grow, but don't bite your tail. Hold a button to charge a rocket jump that arcs over your own body, refueled at airports and pellets. Volumetric clouds, weather systems, turbo speed-rush.
Par system: beat the great-circle par time for Amazing/Great/OK ratings and score multipliers, with a countdown timer bar. Plus pause.
One-hand controls: jump moved to Down/S, plus a tap-to-boost button (works on touch and mouse)
Charge-jump (hold SPACE): rocket-boost over your own body, with smoke, power dots, and pellets
fixes
I always wanted to know what it felt like to be an airborne snake. Now I know. Thank you, @tommaso.