One thing about Crossplay that I never see anyone mention really, is that the average gamer who has heard about it but doesn't know the details, as well as the average gaming journalist seems to think Crossplay is some magic wand, like GOG made this magic software that connects to Steam, connects to Origin or any other gaming service and enables gamers on any of those services to play games with anyone on other services and it works with any game that's on GOG that is also on Steam or wherever. Magic wand.

In reality, if that was true there would be no need to compile a list of Galaxy compatible games other than to say out loud "every game that is sold on GOG that is also sold on Steam and has multiplayer". But that's not how it works at all. People are misled to think that because it was announced using marketing presentation with no real technical details, then mainstream journalism more or less copy and pasted that and non-technical people jumped to magic beans conclusions that don't really make any technical sense. :)

I don't know precicely how it works myself, but I know that games have to be made Galaxy multiplayer+crossplay compatible for it to work, which ultimately means that it's more or less a GOG owned replacement for Gamespy with which us GOG gamers can rely upon to have working multiplayer as long as GOG is in business rather than "as long as Gamespy" is in business or some other 3rd party here to day gone tomorrow. So Galaxy multiplayer matchmaking is good for us in the sense it is gives our games more longevity with multiplayer than some 3rd party site that might fold tomorrow - as long as you make the assumption that GOG's business direction is on a solid footing, and I think it is. What we do know is that it doesn't allow any random games to be able to do multiplayer between services like magic however. It requires the game developers to decide to use the GOG multiplayer platform as the multiplayer component in their games. That's how it works ultimately is that it doesn't matter where you buy those crossplay compatible games, they all must use Galaxy multiplayer service for it to work. There are probably finer details to it than that which are more complicated but that's the jist. Those same games could also support other multiplayer services as well such as Steam etc. but it's just another one that support is being added for.

I just wish that they would publish the technical details without the marketese however and put the magic unicorn ideas some people have to sleep. :)