This mod makes the polar icecaps dynamic. Ice can occasionally grow and disappear, so that arctic passages can be open during one turn and closed during another.
The ice can be crossed by Workboats and Destroyers, but the high movement cost allows them to move only one tile a turn through ice.
With Combustion, Workboats and Destroyers will become able to break the ice. This will be useful for opening passages.
The ice can be crossed by Workboats and Destroyers, but the high movement cost allows them to move only one tile a turn through ice.
With Combustion, Workboats and Destroyers will become able to break the ice. This will be useful for opening passages.

Well, the only editors I use are vi and emacs, so they're probably not real acceptable suggestions, except I did use XMLWriter once to reformat the CIV4UnitInfos.xml file. As delivered from Firaxis, it contains no newlines. And I'm sorry if I came across a little strong. I do like the mod idea and would like to include it.