When you start a new city in Cities: Skylines even if you have the 81 tiles mod installed, the map only shows one tile. To unlock all tiles
Before opening the city
- Install the 81 tiles mod
Start a new city
- Press ESC to open the menu
- Select Options
- In the Mods settings section click the 81 tiles item
- Click the Unlock all tiles for free button
Important
When the 81 tiles mod is installed, it is very important to exit to the Desktop every time you switch between cities or editors, otherwise, you will get errors in the game. Always select Quit game to Desktop. Returning to the Desktop clears the memory for a fresh start for the next session.