Yeah, Civ for the SNES works quite well... but a bit slow.
And there is an opensource project named "FreeCiv", so I guess it's easier
to port it that write a DOS emulator
And my idea for Pirates! came with Frodo - it doesn't work yet
(actually, it seems I'm a real unlucky guy - most C64 games I love don't work with Frodo at the moment... like MULE, Alter Ego, Impossible Mission, Pirates, Archon, Bruce Lee, Bomb Jack, Racing Destruction Set, Road Runner, etc.), but it's a pretty impressive beta release, I guess nearly all games will work with sound 100% speed

)