Spotted on Crowd Supply, the Open Game Station is an open source platform for building handheld 8-bit game consoles. While not a new concept, the idea here is that instead of being a single game, it's a sort of “PCB ecosystem” with modules that allow you to change code and customize the way you use it.
The base “Game Board” looks reminiscent to a simplified PCB-based version of a PlayStation controller, with grips, a directional button pad, and A/B action buttons. In the middle, and towards the top of the controller section, however, are slots for expansion cards, which can include a 128 x 64 pixel monochrome display, buzzer, and AAA battery pack. In addition, the Pro Version comes with a sound sensor Card, 9-DoF sensor card, and an extension board to enable you to take advantage of more cards than with standard hardware.
The Open Game Station is based around an ATmega32U4 microcontroller, and can run games made for Arduboy, including the collection found here. The console is Arduino-compatible, and with the ATmega32U4’s HID capabilities, one could see all kinds of novel uses for the device, perhaps it could even be used as an auxiliary computer input.
Those interested can sign up on its crowdfunding page to be notified when it's ready to launch!