Turn the key, feel the starter catch, and bring an engine to its redline. Revving is an engine simulator you drive: every sound it makes is computed live from the physics of the engine turning in front of you. No recordings, no loops.

Real physics, real sound

• Every engine is simulated in real time: pistons, connecting rods, crankshafts, cams and valves, gas flowing through intake and exhaust, fuel burning in each cylinder.

• The sound is synthesized from the simulated exhaust pulses, so it changes with everything you do: throttle, load, gear, rpm, the rev limiter cutting in, VTEC crossing over.

• Each engine drives what it really drove, car, motorcycle, aircraft or locomotive, with its gearing, weight, aerodynamics, redline, rev limiter and top speed.

Drive it yourself

• Switch on the ignition and hold the starter until the engine fires.

• Clutch, brake and gas; an H-pattern lever through the gate. Forget the clutch and the gears grind.

• Or shift up and down sequentially, or let the automatic do it.

• Stall it, bog it, bounce it off the limiter, launch it: the engine answers like the real one.

• Keyboard, mouse or gamepad: analogue triggers for gas and brake, the right stick for the lever.

Watch it run

• The engine is drawn in 3D, turning in step with what you hear: pistons, crank, cams, valve springs, headers.

• Point at any part to see its name.

• Coded colours show the intake and exhaust flow at a glance.

• A driving-game HUD: rev counter with shift lights, a speedometer scaled to the vehicle, live charts of manifold pressure, air flow and air/fuel ratio, plus VTEC and limiter lamps.

• A full gauge cluster, with a firing lamp for every cylinder.

19 engines, every layout

• Honda B18C5 inline-4, VTEC to 8,400 rpm, in an Integra Type R (free)

• Chevrolet 454 big-block V8, in a 1978 C20 pickup (free)

• Subaru EJ25 flat-4, in an Impreza WRX STI

• Harley-Davidson Shovelhead V-twin, in an Electra Glide

• Audi inline-5, in a Coupe quattro 20V

• Toyota 2JZ inline-6, in a Supra

• GM LS V8, in a C5 Corvette

• Ferrari F136 V8, the flat-plane scream to 9,000 rpm, in a 458 Italia

• Lexus LFA V10, to 9,000 rpm

• Ferrari 412 T2 V12, a 1995 Formula 1 engine that revs to 17,000 rpm

• Radial 5 and Radial 9 aero engines, on a propeller

• Ariel Square Four: two twins geared together, in the 1950s motorcycle

• Volkswagen VR6, in a Golf VR6, and the W12 made of two of them, in a Phaeton

• BRM H16: two flat-eights geared together, in the 1966 P83 Formula 1 car

• Rolls-Royce Vulture X24, on an Avro Manchester's propeller

• Junkers Jumo 205, an opposed-piston two-stroke diesel aero engine

• Napier Deltic: eighteen cylinders in a triangle, as in the British Rail Class 55

The Honda and the Chevrolet 454 are free. The Every Engine DLC unlocks the other seventeen.

Settings

• Audio quality from Low to Ultra: more detail in the simulation for more detail in the sound, as far as your CPU allows. A load meter shows how hard it works.

• Graphics from Low to High, with worn metal, shadows and smooth edges at the top.

• 75 languages, and metric or imperial units.

Headphones recommended.

Engine simulation ported from Engine Simulator by Ange Yaghi (AngeTheGreat), MIT licence.

All product names, logos and brands are the property of their respective owners. Revving is not affiliated with or endorsed by any of the manufacturers named.