Gravity Constant: 1
Press H for instructions.
Click to place a body.
Scroll or use arrow keys to change mass.
Drag to give it a velocity vector.
Press space to create a cloud.
Press K to fill the screen.
Middle-click or shift-click and drag to move the viewport.
Shift-scroll to zoom.
Press C to track the most massive object.
Press D to delete all bodies not on the screen.
Press Q/A to increase/decrease the gravity constant.
Press P to pause/unpause.