Collect the crystals from all 50 rooms before your oxygen runs out - this is the challenge of this intriguing platform game.

You begin your five life quest on a platform in room one which is literally littered with crystals. In fact, all you have to do is jump up to collect them. This shouldn't be a problem as you've got almost total ontrol of your jumps and can change direction several times while in flight.

But you'll have to perfect your technique so you can jump up in between the platforms and avoid the killer nasties that are floating about, as well as the deadly slithering snakes, not to mention the fire pits that threaten to engulf unwary adventurers.

To add to your troubles, there are platforms that appear and disappear almost at will and you have to plunder the crystals before your limited oxygen runs out. You get an extra life for clearing a screen and an oxygen top-up, so you should be able to finish the game with the available 55 lives! Unfortunately, it isn't that easy.