Plupon

Plupon is a strange little game, but it is a good concept. With a bit of work, this could be a real gem of a game. The instructions are not that clear: you have to add number bubbles up to multiples of 10, but you can also in the interim add lower denominations to a value under 10, so if you see a 0, 1 and 2 floating down you can combine them to make 3 without a penalty. In fact, the first couple of levels are very dull unless you do!