Market is full of portable games and they are really cool to spend time. Anyway if you need something more than playing, then take a chance of building one. Take a look at this simple portable game which consists only of 4×4 RGB LED matrix which is controlled by PIC16F628a microcontroller.

As there is no circuit published yet, you can already see that it is no more than few components including transistors, PIC microcontroller and few buttons. Right now there is only one game ready – race game where you have to avoid obstacles.