Below is an example configuration for nginx to be able to play both Godot 4 and Unity WebGL games on your nginx web server.

# An example nginx configuration file that allows for the use of
# Godot 4 and Unity WebGL games to run.

server {
    listen 80;
    server_name example.com;
    return 301 https://$host$request_uri;
}

server {
    listen       443 ssl;
    server_name  example.com;
    root    /path/to/the/game/folders;
    index   index.html index.htm;
    ssl_certificate /etc/ssl/certs/localhost.crt;
    ssl_certificate_key /etc/ssl/private/localhost.key;
    ssl_protocols TLSv1.2 TLSv1.1 TLSv1;

    #------------------------------------------------
    # Adds required support for Godot 4 WebGL Support
    #------------------------------------------------
    location / {
        add_header Cross-Origin-Resource-Policy same-origin;
        add_header Cross-Origin-Opener-Policy same-origin;
        add_header Cross-Origin-Embedder-Policy require-corp;
    }

    #----------------------------------
    # Unity WebGL Support
    #----------------------------------

    # On-disk Brotli-precompressed data files should be served with compression enabled:
    location ~ .+\.(data|symbols\.json)\.br$ {
        # Because this file is already pre-compressed on disk, disable the on-demand compression on it.
        # Otherwise nginx would attempt double compression.
        gzip off;
        add_header Content-Encoding br;
        default_type application/octet-stream;
    }

    # On-disk Brotli-precompressed JavaScript code files:
    location ~ .+\.js\.br$ {
        gzip off; # Do not attempt dynamic gzip compression on an already compressed file
        add_header Content-Encoding br;
        default_type application/javascript;
    }

    # On-disk Brotli-precompressed WebAssembly files:
    location ~ .+\.wasm\.br$ {
        gzip off; # Do not attempt dynamic gzip compression on an already compressed file
        add_header Content-Encoding br;
        # Enable streaming WebAssembly compilation by specifying the correct MIME type for
        # Wasm files.
        default_type application/wasm;
    }

    # On-disk gzip-precompressed data files should be served with compression enabled:
    location ~ .+\.(data|symbols\.json)\.gz$ {
        gzip off; # Do not attempt dynamic gzip compression on an already compressed file
        add_header Content-Encoding gzip;
        default_type application/octet-stream;
    }

    # On-disk gzip-precompressed JavaScript code files:
    location ~ .+\.js\.gz$ {
        gzip off; # Do not attempt dynamic gzip compression on an already compressed file
        add_header Content-Encoding gzip;
        default_type application/javascript;
    }

    # On-disk gzip-precompressed WebAssembly files:
    location ~ .+\.wasm\.gz$ {
        gzip off; # Do not attempt dynamic gzip compression on an already compressed file
        add_header Content-Encoding gzip;
        # Enable streaming WebAssembly compilation by specifying the correct MIME type for
        # Wasm files.
        default_type application/wasm;
    }
}