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.