Orbit Balancer
Drag a planet around a star and give it just the right velocity for a stable orbit — not too fast, not too slow.
How to play
Drag the canvas to place the planet, then drag from the planet to set its launch velocity. Hint: the circular speed for a radius r is √(GM/r). Survive 30 seconds without falling into the star or escaping to win.
Games run entirely in your browser — no sign-in, no data sent to a server.