Mirror is built [and tested](https://docs.google.com/document/d/e/2PACX-1vQqf_iqOLlBRTUqqyor_OUx_rHlYx-SYvZWMvHGuLIuRuxJ-qX3s8JzrrBB5vxDdGfl-HhYZW3g5lLW/pub#h.h4wha2mpetsc) for **MMO Scale** Networking by the developers of [uMMORPG](https://www.assetstore.unity3d.com/#!/content/51212), [uSurvival](https://www.assetstore.unity3d.com/#!/content/95015) and [Cubica](https://cubica.net).
Mirror is optimized for **ease of use** and **probability of success**. Projects that use Mirror are small, concise and maintainable. uMMORPG was possible with <6000linesofcode.Weneededanetworkinglibrarythatallowsusto [launch our games](https://ummorpg.net/showcase/),period.
With Mirror, the **Server & Client are ONE** project _(hence the name)_. Instead of having one code base for the server and one for the client, we simply use the same code for both of them.
We are still working on the documentation, but Mirror is still similar enough to UNET that you can use the [UNET Manual](https://docs.unity3d.com/Manual/UNet.html) for now.
_Oh, and you won't have to worry about channels, low level networking, [packet loss](https://forum.unity.com/threads/unet-deprecation-thread.543501/page-3#post-3597869), [lack of support](https://forum.unity.com/threads/is-hlapi-dead.517436/) or [bugs](https://issuetracker.unity3d.com/issues/unet-networkwriter-dot-write-causing-readstring-slash-readbytes-out-of-range-errors-in-clients) ever again. Mirror just works._
If you are still using UNET and want to switch to Mirror, you should check out our [Migration Guide](https://github.com/vis2k/Mirror/blob/mirror/migration.md). Don't panic, it's very easy and won't take more than 5 minutes.
For a fully polished complete project example, consider [uMMORPG](https://www.assetstore.unity3d.com/#!/content/51212) or [uSurvival](https://www.assetstore.unity3d.com/#!/content/95015).
Building Mirror yourself is very easy. Simply download the project, open it in Visual Studio or Rider, build it once for Release and once for Release-Editor. You will then find all the necessary DLLs in the Output directory.
* Telepathy [1000 connections](https://github.com/vis2k/Telepathy) test
* [uMMORPG 207 CCU worst case test](https://docs.google.com/document/d/e/2PACX-1vQqf_iqOLlBRTUqqyor_OUx_rHlYx-SYvZWMvHGuLIuRuxJ-qX3s8JzrrBB5vxDdGfl-HhYZW3g5lLW/pub#h.h4wha2mpetsc) (everyone broadcasting to everyone else)
* [uSurvival 122 CCU worst case test](https://docs.google.com/document/d/e/2PACX-1vT28FcGXYlbG8gwi8DhD914n7K-wCAE8qhfetPkSli96ikc1Td3zJO1IiwVhfPVtKUHF0l3N7ZkM5GU/pub#h.pwbvffnwcewe)
