Coloroid

Coloroid is a puzzle game where the player attempts to fill the playfield with a single color. The playing field is divided into a number of rectangles of various colors; in the beginning, the top-left rectangle is marked with an outline. The player chooses a specific color from a list, and the outlined area expands to cover all rectangles it touches that are of this color. There is a limited number of moves to finish each level.

The player can freely choose the size of the board, the number of colors, and choose a rotating blocks option, which makes certain rectangles constantly change color.