What do you know about car engines? In this cool game, you will learn a lot of interesting things about this complicated mechanism. The aim of this project is to continuously upgrade your engine by adding pistons and make it more powerful. It will enable your vehicle to move faster and leave behind all your opponents. Show your excellent performance and earn coins. Then use this money to buy new pistons. If you have several identical spare parts, you can merge them into one more powerful item. Have fun!