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### 2. How to play

### 2.1 Handling the falling piece

This game use keyboard keys to rotate, translate or drop down the falling piece. This keys are configurable with the menu item `options->keys`.

### 2.2 How to gain points

There are two sources of points :

- Dropping down a piece gives a small amount of points equals to its drop height. It is not much but better than one can think perticularly in small levels (when the pieces fall slowly).
- The biggest part of the score comes from destroying full lines. It is very important to note that destroying multiple lines at the same time gives you much more points. A four-lines destruction is called a tetris : it gives a maximum amount of points.

  The points gained are 40 for a one-liner, 100 for two lines, 300 for three lines and 1200 for a tetris. These numbers must be multiplied by the current level. Destroying four lines in level 10 gives 12000 points !!

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