---
title: Complete the city
description: Part of the Create and Destroy series. Finish creating a city for the multiplayer experience.
next: /education/build-it-play-it-create-and-destroy/island-terrain
prev: /education/build-it-play-it-create-and-destroy/buildings-and-props
---

When the first half of the city is ready, the next step is to use duplicate to turn it into a complete 4-player map. Even after you've duplicated the first half, you can still keep making changes to the city.

1. In the Model tab, **collisions** should be **off** (not highlighted). Collisions will make the map difficult to move and rotate.

   <img src="../../assets/education/build-it-play-it-create-and-destroy/collisionsOff.png" />

2. Click and drag your mouse to **select all** the buildings, roads, and props.
   <video controls src="../../assets/education/build-it-play-it-create-and-destroy/cc2019_showSelectDragCity.mp4" width="100%"></video>

3. **Duplicate** the selection just like you have before.
4. Use the **Move** and **Rotate** tools to reposition your city. If it doesn't look right, just undo (<kbd>Ctrl + Z</kbd> or <kbd>⌘ + Z</kbd>) and try again.
   <video controls src="../../assets/education/build-it-play-it-create-and-destroy/cc2019_showDuplicateCity.mp4" width="100%"></video>

After duplicating and rotating the city, you can add or adjust tiles to make the halves fit together better.