RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_URI} ^/playarea/assets/
RewriteRule ^ - [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]

RewriteCond %{REQUEST_URI} \.(png|jpg|gif|jpeg|bmp|css|js|svg|ttf)$
RewriteRule ^ - [L]

RewriteRule ^(.*[^/])$ /$1/ [L,R=301]

RewriteRule ^ index.php [QSA,L]