Acclaim came up trumps when they picked the sequel to a Japanese puzzle game no-one's heard of. Bust-A-Move 2 features Bub and Bob, the baby dinosaur stars of Bubble Bobble. These two little fellas have clockword harpoon guns that shoot brightly coloured balls towards the top of the screen. The advancing wall of accumulating spheres can only be depleted by strategically firing the balls so they connect to similarly coloured balls, thus disintegrating.

If you don't make enought 'Connect 4' style links, then you'll become overwhelmed and lose. And that, aside from some extra 'puzzle mode' options which stretch the gameplay, is basically it.

Don't be fooled by the relatively simple appearance and technique of this game - it is without doubt the most addictive and compelling puzzler the Saturn has yet seen.

If you only buy one puzzle game, make it Bust-A-Move 2. So addictive it's frightening.