Description: Classic tetris game with 2 difficulty levels
There are 3 special bricks
first consist of one square it can pass thru other bricks to fill gaps bellow them
Second one consist of 2 squares you can press up key while this brick is falling to shoot other bricks to erase them
Third one consist of 3 squares you can press up key while this brick is falling to create bricks
Rules can be found here http://en.wikipedia.org/wiki/Tetris
