Requires a 3rd-party update (MSTS-Bin) to run most equipment and routes released since about 2008.Requires 'demon tweaks' to run in Windows 7 and later (probably Vista and later) that are documented in the fan community but nowhere else.
Officially not compatible with any version of Windows since XP (maybe Vista).Effectively abandonware, but closed-source and the owner is still around and has lawyers.Some key differences as I see them, assuming one is using a relatively modern (post-XP) version of Windows:
