Version 4 remove the opportunity for train bridging across the shallow waters many of the shallow water areas have been lowered down making them too deep to build train bridges reduce the amount of flat land away from the middle of the map probably insane starting point and the hard starting point lower the mountains and box them up reducing the amount of sliding or collapsing providing more opportunities for players to span adjusted resources get the easy starting location
Version 5 fix a lot of the terrain that continues collapsing causing huge latency problems made the map a little bit cleaner