Boasting such delights on the cassette inlay as "Inertial Control", "True perspective", "Auto Joystick Detection". "Screenshots may be from another version" and "£2.99", it'll come as little surprise when I tell you that this one is a bit of a corker.
Balls - that what it's all about. You have to bounce along The Corridor of Doom squashing cylinders, in fact. The Corridor of Doom consists of a 3D ceiling and a floor (see screenshot) which (by pressing Fire) you can bounce left and right along, as well as 'into' and 'out of' . By using the squares on the floor and ceilign (see screenshot again) to help, you can hopefully land on one of those cylinder things hence squashing it (squash them all to beat the game), without impaling youself on one of the those nasty-looking spiky things (see screenshot again) into the bargain. And that's it. Sounds crap, but it isn't. It's brilliant - the graphics look fab, it's easy to get into, it ain't too hard, it's compulsively addictive and pretty hard to fault. In fact, it's impossible (ho).
And here it is - the caption (see review).