Game rules of the Filler are very simple. The goal of the game is to capture a larger territory than your opponent.
The playing field is filled with colored berries. At the beginning of the game, berries of the players are situated on the opposite corners of the field: the top-right corner is for you and the bottom-left one is for your opponent.
At your turn, you should change the "color" - type of berry - of your territory to any of available ones. After that your territory acquires a chosen color all the nearby-located berries of the same color will be captured. Thus, your territory will constantly enlarge. Once you capture more than 1/2 - you is the winner.
You cannot choose the same berry type twice in a row, or the berry of the opponent.

It's easy to learn to play but it would be hard to stop.