You piloting a spaceship-like craft which is trapped within a huge multi-room cube and each of these inner rooms are littered with platforms that allow you to progressively boiing higher and higher into the air, as if on trampolines! This may sound rather silly (and it is) but its also quite a cool concept and one which is certainly well executed.
With two available gameplay modes: "Action" has a time restriction, whereas "Emotion" gives you all the time in the world and is useful for newcomers or those wanting a leisurely experience. Controls are best with the joystick and navigation is aided by pushing up or down to change your viewing angle. Also, a shadow is cast by your craft which helps to pinpoint your position perfectly. Some rooms contain obscure baddies which can annoyingly get in the way and knock you off position. If you don't use the platforms then gravity takes over and you sink to the floor because your craft strangely has no upward thrust, only forwards. So use them, bouncing from platform to platform, reaching dizzy heights and ultimately the exit.
Graphically this is one mightily impressive game and the Atari ST is certainly working hard to display an abstract 3D world of filled-vectors and zero distance clipping. Those lucky enough to have a faster computer will enjoy even smoother frame-rates but a stock 8MHz computer performs fast and fluid.
I personally rank this quirky Infogrames title as a perfect example of what goodies are lurking within the retro gaming archives just waiting to be re/discovered. It might not appeal to everyone, but Alpha Waves certainly helped invent a new platformer style nobody ever expected, one which plays great and offers a unique challenge of skill and perseverance. Who would ever have thought bouncing your way through a cube could be so much fun?