Drench - the world's simplest flash game

There are no instructions, but the premise really is simple: Turn the entire board any one color within a set number of moves. Begin at the upper left square and click one of the colors on the right; all adjacent squares will turn that color. Keep it up, keeping an eye on what color squares are blocking others, until you've changed them all to one color.

In the screenshot above, you'd click pale purple, and the pale green squares you start on will turn that color. You might then click darker green, to turn pale purple to dark green and expose the dark purple squares. Then red...

Even without instructions, I figured it out in a few clicks, and after that was able to complete the transformation in the allotted number of moves. Do it, there's another level. And another.

Kind of fun, not hard.