Click on the tile you want to change (from the city screen of the city that is supposed to work the tile.PoweredBySoy said:Also, I have question regarding this. Let's say two cities do share a tile - is there a way for me to control which city is able to work that specific tile? It seems to me that the city that originally controlled the shared tile will stay in command of it, even if it's not being worked, while it would remain grayed out for the secondary city.
About advantages:
Most significant advantage is that you really work your land. Let's assume you settle your cities in a way that creates no overlap at all. Until your cities are size 20, you never work all your tiles. However most of the game your city is size 5-15 (depending on mapscript, use of slavery, etc) and works probabely half of the tiles it can work. So you don't use your land efficently. Overlapping enables you to work more of the land you have.
Also, if you have a cottage city and you need/want a building in there, then you can work hills to get this building, while other cities develop the cottages. When the building is done, the cottage city can work towns and you get more science/gold (because you have probabely more % buildings in the science city).
Or you want to hurry a GS and you don't need a couple of nice tiles (gold, gems, cow, ...) that your neighbor city would greatly profit from. Then you can run as many specialists as you need and the tiles aren't "wasted" for those turns.
Another advantage is, that forests count for both cities (and every forest gives 0.5 health).
True, this requires lots of MM (=Micromanagement) but if you use it, you can improve your output (production and gold) by a significant rate.