Royalty Free asset packs exclusively for interactive media

Designed for games and app developers

Available as UE4 Project asset pack, Unity 3D asset, or raw WAV format:

AAA-rated blockbuster film sound effects created using the latest FM synthesis and sound warping technologies.

3 fully adaptive engine sfx were built using the latest synthesis technology. Change gear, accelerate, decelerate, turbo, supercharger, dump valves, engine starts, engine fails and much more. Perfect for pod racers, spaceships, futuristic bikes and cars etc

Included in the pack are 70 ascending and descending Shepard Tones built from engine sounds and analog synthesizers. A Shepard Tone is an audio illusion effect that gives the listener the feeling that a sound if constantly going up or down in pitch when it is in fact a loop. Perfect for racing and sci-fi action sounds, or used as a constant tension creation and suspense tool. All Shepard Tones are seamless loops and easily integrated into your Unreal Project.

Built from:

Car V8 Engine

Super bike

Jet Engine

Light Aircraft (prop engine)

Boat Engine

Synthesised Spaceship effects

FM modulated engines

Analog Synthesisers

Lifetime updates included

Technical Details


  • 70 seamless Shepard Tone loops
  • 60 adaptive engine sounds. Build your own reactive sci-fi engine using these hi-tech sounds
  • 36 Ascending Shepard Tones
  • 34 Descending Shepard Tones
  • 27 Accelerating SpaceCraft Sci-Fi sounds and riser hit SFX
  • 14 Sci-Fi Engine SFX – Dumpvalves, Turbo, Supercharger, Boost, Fail

Number of Audio Waves: 171

Number of Audio Cues: 171

Sample rate / bit rate: 44,100 Hz 16 Bit

Do Sound FX loop: Yes

Supported Development Platforms: All


Available pre configured as an Unreal Engine asset pack (with all loops & cues set up), Unity 3d Asset, or in raw WAV format – choose at check out.

Our full range of asset packs: