Engine Builder: Car & Truck

Build real engines piece by piece. Drag the block, crankshaft, pistons, heads, and more into place, then press START and rev your engine with a slider. Made for kids who love cars and trucks, and for anyone who wants to learn what's under the hood. HOW IT WORKS • Pick an engine and drag each part from the tray onto the engine • Parts snap into place with a satisfying click • Finish the build to unlock the START button, then rev it up and watch the pistons pump • Every part is labeled, so kids learn real names like crankshaft, camshaft, and turbocharger 26 ENGINES TO BUILD Small engines: scooter, go kart, lawn mower Car and truck engines: V8s, an inline four, a flat six, a twin turbo six, a rotary, a V12 Motorcycle engines: dirt bike, sport bike, V twin, parallel twin Diesel engines: inline six, V8s, tractor, semi truck FOR GROWN UPS • No ads, no links out, no data collection, no accounts • Four engines are free. One purchase unlocks all 22 forever, plus every engine we add later • Progress saves automatically, so a build can pick up where it left off • Works great for adults too: a simple way to learn how an engine goes together before you turn a wrench on a real one Designed for iPad, works on iPhone.