Clear It! is a unique and interesting puzzle game. The rules are simple but the challenge is endless - you can even redesign the game to make it easier or more difficult. Here's a screenshot of the game (small for the purposes of this web page, but you can stretch or maximise it freely).

You just place the pieces on the board to make a rectangle of one colour, and the rectangle disappears along with all pieces of the same colour connected to it. In this level, a 3x2 rectangle is required. Use your strategy skills to get rid of bad areas by connecting them to a colour rectangle.

The top green piece is next to be played (the three below will then move up and another will appear at the bottom). Rotate and play it on the board to make a 3x2 green rectangle (can you see how?) and all the green squares will disappear, as they are in a single group.

With V4 you can now play against the clock if you want. A timer bar appears in timed levels - fail to play a piece in time, and the punishment is that a random empty square becomes coloured. Of course timed play is optional.

The trial version has a score limit in the standard game, and a lower limit in any levels you design. But you can experiment with all the options.