Steam now lets you take local co-op games online with Remote Play Together – Destructoid

Only the host player needs to own a copy of the game I’m ecstatic about Remote Play Together, a new

Steam Remote Play Together

Steam (service) - Wikipedia

Steam's Remote Play Together feature now works without an account

Overcooked! 2 on Steam

Fixed: Remote Play Couldn't Connect to the Remote Computer

Steam will be adding new feature called Remote Play Together allowing Local Co-op/Multiplayer only games to be played over the Internet : r/Games

Steam now lets you play local multiplayer games with friends over the internet - The Verge

Steam's Remote Play Together is fiddly, but still a great way to play couch co-op online

Steam Remote Play Together Guide How to Play Local Multiplayer Games Online - GameRevolution