Idle Engine Simulator

Rev, tune & build engines, from a lawn mower to a 28-cylinder radial!

Start with a worn 50cc lawn mower engine and build your way up to a roaring 28-cylinder radial. Idle Engine Simulator is a relaxing engine tycoon game: rev your engine, bolt on better parts, tune it on the dyno and keep earning cash even while you are away.Every engine has a power target and an efficiency target. Upgrade it part by part, find what is holding it back, and certify it at the redline to unlock the next …