More about emulators in general, since we've already determined this
particular
one to have freedom-related problems.
Apparently there are resources ([1], [2]) available to learn how to
write your own game.
And if someone were to create one, or have a copy of one of those
that Matt
mentioned where the author has allowed distribution & modification,
shouldn't
there be a free software emulator out there to run it on?
Let me ask that question another way: Is it a good idea to make
people use only
proprietary software for any task?