You play a hacker who is errr... hacking.
There are 5 levels that you can attain. The higher the better. You start at level one, and if you get to level 0 and lower you die and the game is over.
You basically play virtua cop in this game. No you can't use a gun, but it's a better concept than virtua cop. You move the targeting cursor (which is quite big though small) over enemies and powerups. Selecting up to 8. Then you fire all those shots to kill the enemies and grab the powerups that allow you to level up or get an 'overdrive'.
The 'overdrive' is the equivilent of a bomb. once activated your character shoots nonstop and all the enemies and powerups for about a good 5-8 seconds.
the Graphics are tron-like aka vector based much like tempest or battlezone.
The bosses are a real treat. The game is short though, but playing it again and again is lots of fun.