Arrow keys to move, avoid the skulls and collect the circles (data spheres). If you touch a skull then the game - except the time - resets. if you are running out of time, then you have up to three hacks (triggered by the "h" key), which will give you an extra twenty seconds. Enjoy!
Credit to ITV for the programme "Spy School" on which this challenge is modelled. Credit also to Carol Vorderman for Cheese Chase, upon which this challenge was built.