I have RR Tycoon 2 and I really wish it allowed you to build tunnels. I haven't bought Railroads because it seemed too simplified.
There's also Artdink's Take the A-Train series, now at version 8, but not available in English yet. They have tunnels, full 3D city views, stocks, subways, station timetables, real estate/dept. stores and stadiums your railway co. can build.
Video (WMV)
Screenshots
Sorry if this is threadjacking, and no, I don't have anything to do with Artdink at all.
There's also Artdink's Take the A-Train series, now at version 8, but not available in English yet. They have tunnels, full 3D city views, stocks, subways, station timetables, real estate/dept. stores and stadiums your railway co. can build.
Video (WMV)
Screenshots
Sorry if this is threadjacking, and no, I don't have anything to do with Artdink at all.