You do not need to port forward to share a Plex instance over the Internet. App.plex.tv manages the inbound connections automatically. All you need to do is manage invites to your friends. They log in with their email/password or with Google SSO to app.plex.tv and your content will be available over a secure connection with no port forwarding.
Links awakening is great. Past that some other GB titles:
Super Mario 2: 6 Golden Coins is incredible.
Tetris is great but I prefer the Rosy Retrospection hack. Maybe wait and see if Modretro releases the officially licensed Chromatic Tetris down the road. Chromatic Tetris is already being used in competitions and it looks incredible.
Dr. Mario