On a related note, I wrote a Tetris clone [1] for the JY-MCU-3208 "dot matrix clock" [2] available from DX.com, Banggood etc., recently. It's in C, runs on the ATmega8L on this clock.

[1] https://github.com/hollobon/jy-mcu-3208-tetris

[2] http://www.dx.com/p/jy-mcu-3208-lattice-clock-ht1632c-driver...