This project describes two games – Tetris and Snake, both programmed inside an Atmega168 microcontroller. You can plug this device to a PAL TV and have fun playing the games. The circuit diagram is very simple and uses resistors to generate composite video output.
For more detail: Tetris and Snake with one AVR using Atmega168 microcontroller
This free embedded project also found using:
- atmega328 simple project
- avr snake