Model Engine Builder vs PolyBike

Build, run and collect engines in your own pixel-art workshop. Fit parts, tighten bolts, adjust the setup and time the ignition in four scored stages. Keep each finished engine on your shelf, complete Control and Response inspections, or try an untimed Free Run with throttle, load and start/stop controls. 15 ENGINES Four engines are ready to play. The other eleven can each be permanently unlocked on this device by completing an optional rewarded ad when available. The new designs are an inline three-cylinder, a flat-six and a supercharged V8. A one-time, non-consumable Remove Ads purchase unlocks all 15 engines and removes ads. It is not a subscription. BUILD AGAIN WITH A GOAL Follow your next workshop goal, collect inspection stamps and improve your weakest build stage. Assembly, setup and ignition demands now increase across four-, six-, eight- and twelve-cylinder engines. Compete on the existing online leaderboards through Game Center. Each engine has its own board. Existing board IDs and records are preserved; the three new engines have separate boards. Only completed four-stage build scores from 0 to 1000 are submitted, and higher records are kept. Failed score uploads remain queued for retry. Same-rules comparisons are an on-device coaching aid, not a replacement for online rankings. Core gameplay works offline without a separate account. Online rankings require internet and platform sign-in; ads and purchases require internet. Progress is stored on the device. Engine behavior and readings are game approximations, not engineering measurements.

SEND IT IN POLYBIKE MX! Grab your dirt bike and launch into a colorful world of huge jumps, wild tricks and close racing. Ride sunny islands, glowing volcanoes, snowy mountains, neon nights and city streets, then take on six rival riders in Race Mode. 37 TRACKS, ONE-OF-A-KIND WORLDS • 22 bike tracks and 15 tracks built for 4-wheelers • Tropical lagoons, lava rivers, pink dunes, crystal caverns, northern lights, red canyons and more • Loops, fast downhills, bike parks and the giant Mega Jump RACE 6 RIVALS • Supercross stadiums, city night races and desert rallies • Bots from easy to hard, a 3-2-1 start and a podium for the top 3 • Unlock new races by finishing tracks and placing in the top 3 FLIPS, 360s & WHIPS • Backflips, frontflips, 360s, whips and wheelies • Smooth physics with big air and real landings — finish your trick or eat dirt! • Race your own ghost to beat your best time BIKES, QUADS, UTVs & TROPHY TRUCKS • Four dirt bikes, including the electric Volt E-MX • Raptor Quad, Desert UTV and Trophy Truck, each with their own tracks and races • Unlock new rides as you finish tracks BUILD YOUR OWN TRACKS • Pick a world, time of day, curves, hills and jumps — then ride it SAVE YOUR BEST MOMENTS • Automatic highlight replays with cinematic cameras • Save up to 100 highlights and export them as videos to your camera roll PLAY YOUR WAY • Learn as you ride with a quick hands-on tutorial and a short practice track • Easy two-stick touch controls — or switch sides, or use gas and brake buttons • 1st, 2nd and 3rd person cameras • Hard Mode: shift gears yourself — but over-rev it and your engine blows! • Original soundtrack • Play anywhere — no internet needed Download PolyBike MX and send it!