ObjectBrawl 
A first open source .NET Core Brawl Stars Server for version 26!
Configuration
You can change default name in config.json
("default_name": "YOUR_NAME")
And you can change the starting resources in config.json
Client
To connect to your server, you need a custom client. Here the only solution is to use a pre-made client.
Just edit the IP in the frida-gadget config (/lib/armeabi-v7a/libgg.config.so)
{"interaction":{"interaction":{"type":"script","path":"libscript.so","on_change":"reload","parameters":{"redirectHost":"YOUR_IP","relocate":true}}}
Friendly reminder
The server is in a very early state. Right now, it is NOT recommended to run this on a production environment. Please not open issues about missing features, i'm well aware of this.