Algodoo

This has to be one of my best-looking spawn engines. Dragging the flywheel either way will make it start, and it will only rotate in the correct direction. If it is started the wrong way, the first ignition will reverse it and correct the wrong rotation. I didnt go much for functionality, but it is moderately powerful reaching speeds of over 30 rad/s. The ignition box and spark plug do nothing to power the engine, they just power good ratings and comments

NEW:
Added spark plug flash
Added piston stabilizer
Adjusted a few other things