Movable Lights are lights that can be moved and changed in game. Typical uses would be headlights on a car, flashlights, light fixtures that sway in the wind, and so on. Movable Lights are completely dynamic, and do not support indirect lighting at the moment. Movable lights use dynamic shadowing for the entire scene. As a result, shadow casting movable lights can cost 20x more than a Stationary light.
Of the three light mobilities, Movable lights tend to have medium quality, highest mutability, and the highest performance cost.