Clix Tetris is very unusual version of regular Tetris, with small playing field, blocks not in the shape of tetrominoes, and all blocks known in advance.
The goal of the game is to play through the levels, where in order to solve one level you must cover all empty fields on the board with the playing blocks. You can move and rotate the shapes as you like. To do that, first you need to select a block by clicking on it and while you hold the mouse click, press appropriate arrow key button to rotate or flip. Therefore, the game gives you one additional control – the flip which you don’t have in a regular game of tetris.