- You are given a grid of jewel, coloured jewel at random in multiple jewel colours. In each move, you can flood-fill the bottom left jewel in a coloured jewel of your choice (i.e. every jewel reachable from the starting jewel by an orthogonally connected path of squares all the same coloured jewel will be filled in the new colour jewel). As you do this, more and more of the grid becomes connected to the starting jewel.
Your aim is to make the whole grid the same jewel, in as few moves as possible. The game will set a limit on the number of moves, based on running its own internal solver. You win if you can make the whole grid the same jewel in that many moves or fewer.

- To play, touch in a jewel. The bottom left corner and everything connected to it will be flood-filled with the colour of the jewel you clicked. Clicking a jewel the same colour as the bottom left corner has no effect, and therefore does not count as a move.