# Testing locally

Now we can build the project and try out network replication locally. This example will show you how to launch a local [Replication Server](https://docs.coherence.io/1.1/coherence-sdk-for-unity/replication-server) and connect multiple instances of the game to it.

## Running a Replication Server locally

You can run a local Replication Server from:

*coherence > Local Replication Server > Run for Rooms / Run for Worlds*

![](https://976449006-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4xmLLczbgaGVeoF6vews%2Fuploads%2FBuRL2ognEGiGreziNKpU%2FLaunchRS.png?alt=media\&token=dad16324-48a7-4864-af1a-9f737a051175)

As with most features found in the menu, you can find local Replication Server functionality in the *coherence Hub* as well.

Open the *Replication Servers* tab and run a Room or a World Replication Server:

![](https://976449006-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4xmLLczbgaGVeoF6vews%2Fuploads%2FKOQ7PbG7MxYITl4OnxIS%2FHub_RS.png?alt=media\&token=a6388a2a-a4af-4065-9767-84c1eb9e442e)

Regardless of how you launch it, a new terminal window will open and display the running Replication Server:

![](https://976449006-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4xmLLczbgaGVeoF6vews%2Fuploads%2FV0rBbgN3JwuO4fkqiHP1%2FRS.png?alt=media\&token=15692aa1-e806-4452-8ef0-97b73e205e4f)

{% hint style="info" %}
Whether you run one for Rooms or for Worlds depends on [which setup you plan to use](https://docs.coherence.io/1.1/overview/rooms-and-worlds), which in turn requires the correct corresponding [Sample UI](https://docs.coherence.io/1.1/get-started/scene-setup/samples).
{% endhint %}

## Build and Connect

Now it's time to make a standalone build and test network replication.

{% hint style="info" %}
\#protip: Go to *Project Settings, Player* and change the *Fullscreen Mode* to ***Windowed*** and enable ***Resizable Window***. This will make it much easier to observe standalone builds side-by-side when testing networking.
{% endhint %}

Open the *Build Settings* window (*File > Build Settings*). Click on *Add Open Scenes* to add the current scene to the build.

Click *Build and Run***.**

![](https://content.gitbook.com/content/4xmLLczbgaGVeoF6vews/blobs/CeMCQr1YGMUa5NpbUTnB/image.png)

Select a folder (e.g. *Builds*) and click *OK*.

![](https://content.gitbook.com/content/4xmLLczbgaGVeoF6vews/blobs/JpAD6u15uXnBCznDNShA/image.png)

When the build is done, start another instance of the executable (or run the project in Unity by just hitting Play).

![](https://content.gitbook.com/content/4xmLLczbgaGVeoF6vews/blobs/a95pFuZZB9bfguTlpwft/Screenshot%202021-12-22%20at%2017.14.27.png)

Click *Connect* in the connection UIs on both clients. Now, try focusing on one and using WASD keys. You will see the box move on the other side as well.

![](https://content.gitbook.com/content/4xmLLczbgaGVeoF6vews/blobs/GP8Bnn3OlBBMWEdpUUm5/Screenshot%202021-12-22%20at%2017.15.07.png)

{% hint style="success" %}
Congratulations! You've made your first coherence replicated experience. But this is only the beginning. Keep exploring the documentation to take advantage of more advanced coherence features.
{% endhint %}