Drag your finger on a phone, point with the mouse, or use arrow keys / WASD.
Leave your turf, draw a loop, and come back home. Everything inside becomes yours. The longer you go straight, the faster you get, and the more land you hold, the higher your base and top speed.
Pickups on the map: lightning for speed, a square to push your border out, a star for 6 seconds of invincibility.
If anyone crosses your trail, you're out. Cross theirs to cut them off and take all their turf.