Not bad for a game that fits inside 1K.
Pobble is a falling block puzzle game, in a similar vein to tetris/colorix/klax/columns (too many to name) etc..
In this one you drop one coloured boulder at a time. There are seven possible boulder colours, i.e. the standard eight Spectrum colours, minus black which is the background colour.
The player must get a row of three-of-a-kind to make the boulders disappear and do this quickly enough in order to fight against the upward rising tide of water-bound arrows that are pushing the boulders upwards towards the top of the screen.
All well and good, except that it's a little too easy because there are 8 columns available, so you can just use the simplest strategy of always dropping boulders of the same colour into the same column. Keep doing this fast enough and you can maximise your score.
Also, despite the instructions file mentioning 16K support, the game in fact doesn't work properly on a 16K system. A look at the source reveals that the higher 32K of memory is indeed used to store program data.
Still, perhaps worth a quick go for a few minutes. The game is entirely implemented in machine code, embedded in the BASIC program area.
