yes, you can configure a tcp tunnel for a direct connection to a server from games, or use http tunnels to use a utility service server as a website without port forwarding
here is a quick guide I use when i forget, on how multiple tunnels can be opened on one account for free: - https://medium.com/@singhgautam7/ngrok-make-full-use-of-free-tier-version-to-expose-your-localhost-to-the-internet-1160e652d794