Filler is easy to play, but a bit difficult to
The playing field consists of small, randomly colored diamonds
(later variants have replaced this with hexagons or squares).
The number of colors can usually be configured, it was seven in the
original. The two opponents start in diagonally opposite corners with
a random color each. At each turn, they can choose any color except
the one the opponent currently has. Any adjacent diamonds are of this
color are now part of the player's territory and will be included in
the color change next turn. Once a player has conquered more than 50%
of the field, he has won and the game is over.
gameplay screenshots show a complete game from start to finish.