If you're willing to go the extra mile, and desperate for a friends-only game between the two services, you can try this.

You can create a friends-only game, but then you can only invite your friends in the service you are using (Gog, Steam), because they need to be informed of the 'Galaxy Lobby ID' (that an invite contains). Problem is, in my experience, there is no way to set a password, so unless you have a group of exactly 4 friends, anyone can still join the game after your friends are connected. You can either play an open game, which anyone can join using any client, including your friends, after they find the game in the main server list. The issue is the friend lists, which are not synced in any way between Gog and Steam. SW2 supports crossplay between any Steam/Gog version of the game. No, you can't invite friends from the opposing service (GOG/Steam) to a friends-only game. The content we produce is obviously not free of use should you want to upload our videos on your own website or YouTube channel.TLDR: Yes, crossplay is supported, via open server (that anyone can join, max 4 players). We now also produce HDR videos, which can only be enjoyed by those who own compatible televisions. At a time when Youtube's subpar video compression has become the norm for most people on the Internet, we refuse to give up quality without a fight. The HD content we provide always respects the original resolution and framerate of the games we capture, making Gamersyde the one and only place to get 1080p/4K/60fps videos with high bitrate. We are able to offer fast news delivery and HD content from the upcoming games, and one of the greatest and friendliest gaming communities in the world. We cover both handheld and video games platforms and the site has grown into one of the biggest gaming sites in the continent. Gamersyde is a commercial multiplatform web portal based in Europe, with hundreds of thousands of visitors each month from all over the world.

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