The only interesting thing about this game is how it manages to be so much less enjoyable than the original despite being essentially exactly the same game. Apparently Sensible Software delegated the level design to a computer games journalist who had no prior experience of actually designing computer games. The result, unsurprisingly, is a load of badly designed levels. The whole thing is gimmicky and uninspired and completely lacks the charm of the original ... but even so it's still kind of fun to play.
After 20-odd years I think this game holds up pretty well. It's an ingeniously simple concept and has an atmosphere and style all of its own and, in a word, it's good fun. It has its flaws, particularly the erratic difficulty 'curve', with some levels being almost impossible to complete, but in a way that's all part of its charm. The only problem is that this is a port of the inferior PC version. Those who remember the Amiga version may be disappointed by the rubbish sound effects. Also it runs a bit too fast making what was already a punishing game downright infuriating at times. Otherwise this is a nice trip down memory lane.
