You control a 'super laser' inside a runaway nuclear reactor and must shoot protons to delay melt-down. At the same time you have to avoid running into, or shooting, moving electrons. You can also blast or ram through the meltdown, but too much firing will burn our your laser and too much movement will use up your fuel (stopping tops you up). The cursor is about as small as you can get, so it's a game of absolute precision in orientation and movement, with no leeway for error at all. It's tough enough with a Wico joystick, so you'd have to be pretty hot to get anywhere with an Amstrad stick or the keyboard option.

Delaying the inevitable is, as their critics will tell you, the ultimate point of all arcade-style games, because sooner or later the computer is going to beat you. But this one is a bit too obviously a losing rear-guard action for comfort. It might be a challenge for the real hot-shots, though.