A turntable built into the stage floor on which scenery can be set and then driven into view. Can be electrically chain driven, or manually pushed into position. A revolve can also be built on top of an existing stage.
Revolve is a Belgian computergame creator and publisher. The company is focussing their efforts in creating games that are fun but simplistic. No fancy graphics that require some kind of super computer but just plain old good gameplay that can be played on older computers as well.