> Someone put a Raspberry Pi in a Game Boy case. Big deal.
...And added two additional front facing as well as back ("shoulder") buttons; upgraded the battery that is both rechargeable and replaceable. The screen is upgraded, plus modded a Game Boy cartridge to serve as a MicroSD card holder that is read by the unit.
Contains HDMI out too, so it can hook up to any HDTV.
A tad bit more than just sticking a Pi in a Game Boy case