The possible solution to that is to store deltas instead of the actual map. Instead of persisting the whole map object persist the map as : map with seed xyz, options o1 o2 o3 o4 o5 etc, and coal deposit on tile [30, 135] mined by 200 units, coal deposit on tile [31,135] mines by 198, and a tree cut...

Now, this is not really an idea, but suggestion on the significant performance issue, that in my opinion is the loading time of the game (the loading of the game takes more than a minute on my laptop). Having no access to the game sources I can't be sure, but what i suspect happens is, when the game...