
This game is one of the earliest implementations of the Filler concept, as far as I know, the first after the original Filler and its export version 7 Colors, and the only one for the Macintosh that I have found so far. Like all of Lev Possajenikov's games (check out Kalah) it is well done, though the AI is not very strong and it thus does not offer much of a challenge.