In most Simutrans data files, a station tile has a 5×5 square
catchment area. In pak128.Britain, it's 9×9. From such small
differences one can generate a truly efficient passenger transport
In Simutrans, there are various ways of crossing the sea, though they
basically boil down to bridges and tunnels.
In Simutrans, it's easy to build huge sprawling stations that don't
work very well. There are some convenient optimisations that will help
things flow rather better.
Every so often I get an enthusiasm for something, go hard at it for a
bit, then drop it again. I'm on my third go round with Simutrans.