Double click on any set of blocks of the same color to "destroy" them. Clear out more blocks, win more np. I suggest starting at the top and going down. This game has since been sent to the Game Graveyard due to Destruct-O-Match III being released.
Destruct-O-Match II occupies game IDs 453 and 759, the latter being an updated version of the game which replaced the former.
Type destroyboulders to clear one colour.