Breakout goes whacko. You remember Breakout? No? Am I getting that old? Breakout is the game where you have to trap a bouncing ball in a box by moving a line around a screen. Frenzy is a variation of that.
The story goes thus - deadly sub-atomic particles (Leptons) are loose in a scientific laboratory and you have to trap them before the time runs out. Your tool in this mammoth task is a robot craft, behind which is a green ion trail. This you use to draw ion lines which, hopefully, will ensnare the little devils. Trouble is, if you get hit by a Lepton while you're on the draw, so to speak, you get clobbered. After a few screens things get nasty, you get more Leptons to deal with, plus Chasers (they chase you).
This is a very simple game, easy to play but difficult to master, as they say. But, unlike many simple games it's very addictive. The kind of thing you spend all night thinking "just one more game before bed" and then realise the sun is creeping over the top of the screen.