Three colors in a row

In this puzzle, neighboring, multicolored pebbles change colors according to the principle:

yellow + blue = green

green + blue = black

black + black = empty + yellow + you get one point. For the points scored, a bonus blue stone can be placed on the playing field

It's simple, but only at first glance.

The game contains

- six difficulty levels

- musical accompaniment

- nice graphics, with interchangeable backgrounds. Author - artist Dalia Okuneva