Nintendo DS
So there it is! USA Today has the story. Two screens, one touch sensitive, but you need a stylus? Backwards compatible with all GB games, and has built in Bluetooth for networked play (no more stupid wires).
And for the purposes of comparison, here’s Donkey Kong Game & Watch, a single-game Nintendo system from the early 80’s:
REPLY))
Well I’ll be…. Hmm, secret project long in development? Oh, wait that’s DNF I’m thinking of.