Resources like silver, dye, cotton, olive appear as a group. It's intentional. Check Civ4BonusInfos.xml, and you can see these tags. iGroupRange - If non-zero, every time this resource is placed, all tiles within iGroupRange radius have a iGroupRand chance to have this resource. iGroupRand - If iGroupRange is non-zero, this is the percentage chance that each tile within iGroupRange radius will contain that resource. - from modiki and these tags are defined like this. Code: <Type>BONUS_SILVER</Type> <iGroupRange>1</iGroupRange> <iGroupRand>25</iGroupRand> It wasn't changed from BTS/RoM/AND as far as I know. I'm not sure it should be changed or not. About Sulfur, well, I usually get at least one sulfur.. I agree with Copper thing, though. Regarding resources, salt is really rare but iron and prime timber is too common. Especially prime timber is placed like crazy one! It's because its tag is defined as this. Code: <Type>BONUS_TIMBER</Type> <iPlayer>150</iPlayer> <iTilesPer>16</iTilesPer> It should be reduced.