I would like to present my next game -  Filler Classic. It's realization of well-known DOS-game Filler (aka Seven colors).

You play against a human or computer opponent on a field with color squares. Your goal is to occupy as many squares as possible. Elements of the selected color are occupied if they are adjacent (have common edge) to the already
occupied squares. But you cannot select the current color of your opponent.

Here is a small demo of the game:

Have fun!

Itch.io page: Filler Classic