In C3C 1.22, *any* biq that contains a custom map will use the OCN & tech rate setting for the world size of the last played random map. This includes the conquests that come with C3C and normal map sizes that are generated with the editor. I also tested PTW and that does the same thing for any maps of a non-standard ptw size. I didn't bother with vanilla civ3 but it is probably the same as ptw. So, you can theoretically play RoR and accidently be using huge map settings... then play a tiny random game... then play RoR again and have tiny settings for OCN & tech rate. This can be tested as follows: 1) Start a random game of a specified size of your choice. 2) Save & exit. 3) Start a scenario that has a custom map. 4) Save and exit. 5) Using seedbeast or civ3 multitool savegame editor (seedbeast is quicker), check the .sav and it will say it is the same world size as the random map you started. This can be double checked by starting a second random game of a different size and then starting a new game using the same scenario as before and the new .sav will have the different world size setting. There is only one way around this: Any .biq file that has a custom map must have the OCN & Tech rate set the same for each world size. This way it doesn't matter which size random game was previously played.