I just tested a demo from a game and I do not like it. I would like to remove the demo from my game, but at this time I can only find a "hide game" option, that simply greys out the game.

You cannot. You can try bothering the support and they might do it for a free demo.

It's greyed out until you reload your library, then it'll be in the "hidden" category which you can get to by clicking on the "my collection" text.

It's not properly removed (as already mentioned, only support can do that), but still, despite initial appearances, it won't just be greyed-out.

Maighstir is correct. Refresh your library and you won't see the game again until you check the show hidden game option.

I would very much like to try some of the demo versions GOG is offering. Some of them are interesting, so there’s a good chance I would then buy the full version of the game. But: I do not like to have all these demo versions running around in my game library if they don’t appeal to me and I just wanted to test them. I mean, in real life you would throw away any testing product if you don’t like it? Here I cannot.

What’s worse, if I then buy the full version, the demo does not even vanish! That is ridiculous.

And equally worse, the developers of these games only offer the demo on Steam or on GOG (both don’t let me remove the demo after testing), but not on the game’s homepage. Guys, these are DEMOS! Why don’t you offer them just for download?

So I just googled for "Potion Craft Demo Download", and what do I get? Downloads of full Steam install archives. Illegal of course. And not what I wanted, I just want to test the game as the developer clearly offers a test version, but I don’t want to have it for all eternity in my virtual library.
Maybe I will download the “full demo”, test it, and someday, when GOG releases the game and I liked it, buy it then …

Yes, unfortunately THE ONLY way to remove Demo or any other game from your GOG games library is to try to reach the Tech. Support. But for whatever reason they might accept your request on exception basis only or refuse it completely. They most likely would mention how you may use the Hide option even though it will not reduce the game items in your games library.

According to the GOG rules creating a duplicate account is forbidden. But for the sake of Demo versions check up I highly recommend to do just that. Since it's against the rules you should not mention it publicly. Don't be afraid of accessing your account from the same IP address, technically it could be someone else from the same household.

@GOG, that's one of the many things you absolutely have to implement, allow your users to delete their games at will.

I think this is a bad idea. Hiding games is sufficient, as long as they remain hidden. The only problem I see with hidden games on gog is that they continue to get update notifications. That's something they should fix.

https://www.gog.com/wishlist/site/please_stop_update_notifications_for_hidden_games_in_library
https://www.gog.com/wishlist/site/dont_notify_for_updates_to_hidden_games
https://www.gog.com/wishlist/site/option_to_disable_update_notifications_for_hidden_games

On the other hand, allowing people to delete games at will just opens up the possibility of people complaining about their games being deleted, whether accidentally, by others "hacking" their account, second thoughts, or whatever other reason they may have. Even free games might end up being pulled from the store (or, in the case of non-demos, acquiring a price tag), meaning you will never get it back if it gets removed. I expect it would be less than a week after the introduction of such a feature before the first "GOG STOLE MY GAMES" post.

And I think it's a good idea. The bad idea was to count demo games as games in the first place. Everything can be used for something to complain about later. This was not the topic to discuss the exact way of game removal process, yet you made the worst assumption. Such an option was discussed before and last time I remember I proposed the *consideration period* of 3-6 months, the same way some social messengers provide for account deletion requests. This would negate most if not all possible complaints.
Another option would be to remove free of charge games and demos, even less reasons to complain about it.

It's your right to not like the idea of games removal and I can only respect that, in my opinion everyone should have the right to get rid of something unwanted, especially if it was paid for.

This is part of where they need to just properly restructure the whole catalog and everything. Demos are part of the same problem as "buying the base game and collector's edition upgrade doesn't mark collector's edition as owned". Buying the game should encompass the demo (and the demo would become just a bonus download under the base game; not shown as a separate catalog item -- necessary because some "demos" have unique content andor import stuff into the main game if you played them).

Different opinions … as I stated in my posting, I don’t want to hide them. Hiding is rather an option to have bad games in an area where they don’t get my attention anymore, or similar cases. But demos? Come on. I can get them anytime, I want to test them, and after that, throw them away. If the game’s good, I might buy it. What do I need two game entries then in my library for the same game? I can hide the demo one, but that’s ridiculous.

Your other arguments state the very worst case, and though some points are valid, they can be leveraged quite a bit, like with a grace period of a month or so. (And also, it’s demos! If the demo might get removed from your account and also from GOG, what’s the deal? At that time I will pretty surely have played the demo already.) Don’t get me started. Otherwise I demand my personal blacklist in which I can put every GOG game I want, so that they don’t promote, notify or even show any game I already have bought on other platforms, or am simply not interested in. This would be great for me – but not great for GOG. ;-) Yes, either they could have been put in a separate category, or simply give the users a button “remove from my library”, because … it’s free and always free-to-have demo.

Or even better: GOG could put all the demos in a section on the site where everybody (with a login) can download it. This way there’s no hassle with demos in your libray, and the publishers will still know how many distinct people downloaded their demo. I mean, this must be the only reason why almost all demos can only be downloaded by „buying“ the demo on GOG or Steam and not just simply on their homepage. Why removing something if you can fix the problems? I appreciate the demos and that publishers do them again.

I didn't mean removing demo versions and all free games from GOG catalog, but an option to remove all *added* game items which were bought free of charge.

Or just add a "Demos" section between Games and Movies. That way demos wouldn't be mixed with the "real" library, without the inconveniences of permanently deleting something.

Anyone who ever worked with customer support will tell you it's not best move at least from staff point of view. I guarantee support would be constantly bombarded with people who "accidentally" removed their games, or someone else removed for them, or they removed and changed mind later.

Great idea, and one that others should pick up on and clamor for with GOG.

There are a few games already at GOG, that have a demo that can be downloaded in the Extras section.

Demo page and full Game page should be one and the same in your GOG Library, with only the relevant files showing up.

Other than that, hiding your game should be seen as Archiving it, where you can later restore it if you wish. Amazon for instance, do that with their ebooks.