@beelee great help, thanks again

@beelee thanks for this hint too. I'll try both of them, but one at the time.

@rogercooper Thanks for the encouragement! I was able to mod it this AM. Appreciate it

@djabwana You can restrict the movement of units by step and switch them on & off, between steps, not just by turn as in 1888A Steam & Steel eg (I have not played your game, so this will probably be wrong) turn off all movement for none Battleships/Cruisers, Heavy Artillery, and Railguns step Move Battleships/Cruisers, Heavy Artillery, and Railguns turn on all movement for none Battleships/Cruisers, Heavy Artillery, and Railguns Search go winter in the xml and apply the principles to different step phases of a turn https://forums.triplea-game.org/topic/4056/1888a-steam-steel-official-thread Here is an overview, there are a lot of components, you will not them all Winter Search go winter in the xml to see the components that make up how to use terrain effects and a dummy player needs an allied dummy player, eg. winterp define TT & SZ to be affected define a new allied relationship eg winterr allows combat takes over in TT/SZ (oops has no go winter) needs a WinterLand & WinterSea to be shown in the TT & SZ define territoryEffect eg. Winter Triggers to make it happen when you want it. Note -reset- has to redefine the TT/SZ when a TT/SZ changes effect Hope this helps