Tetris Dot

This is my second game on Pico, like the previous one it was done in a week.
The main difficulty was the management of the grids especially during line destruction. 
There are probably still some bugs, please put them in comments.

PS : The game hasn't music, sorry.

Controls :

Press the Left and Right Arrows to move shapes.
Press Up Arrow to turn the shapes and Down Arrow to drop them.
Press X to continue.
Press the Arrows to interact with the menu. 

Rules :

Complete a maximum amount of lines to gain some points.

Credit :

Nova-lahorde -> beta tester.