Algodoo

An engine that uses water and gravity as fuel. This model uses a basic script to spawn water. On startup the engine might lag a bit, when the engine is running it uses between 1600-2200 water particles.

I think this will be the last 2-cilinder version for the moment, this is the fastest running engine of this type I made so far (it runs a shocking 1,6rad/s!, if you give it enough time)

Controls:
1 - Enter to start/stop the water spawner (toggle)
2 - Shift to release the brake on the flywheel (toggle)
(3 - Ctrl to give the flywheel a little speed, optional)

Controls are also in the scene