I never got a lot of mileage out of Magic Darts, mostly because I don't really know the rules to darts and don't have the inclination to learn.

But if you have a copy of Magic Darts you could to to the title screen.

Then grab Controller 1 and hold down the A + B buttons (and keep holding them until I tell you to stop) and then press Start to go to the Select Game screen

Then start holding down the Select button in addition to the A + B buttons that you're still holding. Then... wait. A minute or so later you'll see a secret message!

I don't know who K1 Nakanishi is, but I do know a game that he or she worked on, and that might get me a wedge in Trivial Pursuit one day.

Also, you can let go of the A + B buttons now.