Also see https://youtu.be/NhnoNYqIhTI.
- W, A, S, D => Movment
- E => Toggle cursor visibility
- T => Toggle simulation
- V => Toggle VSync
- F11 => Toggle fullscreen
- LShift => Faster movment speed
- LControl => Slower movment speed
- Esc => Close
- LButton => Set point of mass