2048 is a little addictive game where you need to combine numbers appearing in 4×4 matrix to get score up to 2048. more about this game can be found on wiki. Lee developed an Arduino version of this game where he controls game with four buttons and joystick while seeing action on Nokia 5110 graphical LCD .
He built all PCBs from scratch leaving only Arduino bootloader on Atmega328 microcontroller. He wanted game device to bee convenient to handle but still doable with home conditions so he split it in to two PCB boards with through hole components. The top board carries LCD, buttons and joystick, bottom board hides microcontroller and power circuit. His home built PCBs look really well made. As power supply he used couple Lithium-Ion batteries and linear 7805 voltage regulator. Even if platform is built for 2048 game it can be used for any game you decide to program. Only memory and imaginations is the limit.