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4x Symmetry City

4x the size of my original map with water available this time, as well as a new island in the middle of the 4 circles.

Each of the 4 large islands takes up 4 map tiles, if you were wondering.

The road system has been tested (with only one of four islands) and provides about 80%+ traffic flow for up to 170k population I got in testing.

Each of the large islands can be entirely self sufficient, but with all 4 combined you could easily see 800k+ pops on this map.

The interchanges used are here https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1193133358

The original concept map is here https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1193834519

There is a single train coming in to one of the islands only, I forgot to add them for all islands but I didnt use trains at all in my testing, and I didn't plan to use outer train connections in my personal save.

You should have network extensions mod as I think I used some of those roads in the outer areas of each island, as well as traffic manager presidential edition which you need to keep people from making u-turns on the highway exits. I coudln't find a way around it other than the lane connector tool. You also need unlimited money on or else you will not be able to do anything.

All 25 tiles mod is required and found here: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=405810376

Other than the error I get because I changed the name of the octopus interchange in my own game I don't see any conflicts with having/not having other mods.