A new patent from Nintendo to change your smartphone into a game boy

[Signalstar]

CaptainExplosion said:

Signalstar said:
Is there any reason why the case could not be a fully functional Game Boy that just fits onto your phone?

Because that would be much bigger than what we see here in the patent.

Why? Game Boy technology is more than 30 years old. They can shrink all the internal stuff down. I don't expect the device to play cartridges.