Blueberry
Asset that allows Multiplayer games to be played through Bluetooth and using Mirror between Android devices.
First clone the repository, download the unity packages from the following releases of Mirror and Ignorance, and unpack them.
Mirror:
https://github.com/vis2k/Mirror/releases/tag/v67.1.0
Ignorance:
https://github.com/SoftwareGuy/Ignorance/releases/tag/v1.4.0r2
This project uses this abandoned asset on the Unity Asset Store
Android Bluetooth Multiplayer: https://assetstore.unity.com/packages/tools/network/android-bluetooth-multiplayer-basic-20928