Since my memory is crappy as sh*t I wish GOG would have a feature where I could mark a game as "Owned" if I have bought it somewhere else.

Good idea, what do you guys think?

You do realize you can assign tags to your games, right?
Just make an "owned" tag.

Edit: Oh, wait, I think I see what you mean. You mean tags for the games in the store, i.e. ones you can buy? I...don't think they're going to do that. That's way too much work for something which they have no reason to put in, and would be bad for business. I mean, I can't think of one singular store that does this or would even WANT to do this.

I think there is already several entries on the wishlist for this type of thing. However it unlikely to get implemented, they want you to buy things at the end of the day. For example:https://www.gog.com/wishlist/site/be_able_to_hide_games_that_are_already_owned_from_the_list_of_games_to_purchase

GOG has Zero motivation to do this. If you "Accidentally" buy a game here you own elsewhere, they get more money. It's not like they have to be super greedy to say you need a better way of managing your games on other services.

As already said, GOG won't do it, their mail goal as a business is to get you to purchase games here, after all. Instead, may I offer the alternative that you take AdaliaBooks and Barefoot_Monkey as examples, and build it yourself?

Well, there is motivation this: People stop going through the list of discounted games if it's too long. And the positioning of the offers on the the home page is less suited to go through all of them.

GOG actually does have a good business motivation to do it. As you said, they want you to buy things at the end of the day and if you already own it, you are unlikely to buy it anyway, except by accident, which doesn't happen often.

It's in GOG's interest to display as many games to you that you are interested in buying and are likely to buy, rather than those you won't.

Consider this, GOG's catalogue page contains 50 games, of which around 20 are displayed on your screen at a time (depending on your screen resolution). Which would serve GOG's interest better, having 12 of those 20 games being ones which you already own and/or not interested in, or having all 20 being ones that you don't own and therefore have a better chance of buying?

EDIT: ninja'ed by The-Business

Amazon.

Edit: Never mind.

GOG is the only place where you OWN the games you buy. At DRM websites like Steam, Uplay, Origin and all this customer-exploiting shit, you pay for games that you don't own!!! Therefore it's a bad idea to tag games as "owned" which you bought somewhere else, because you don't own it. Be smart and buy it at GOG

(I made the mistake to buy some classics on Steam before I got to know GOG. Here I bought these games again. Why not, during the sales they are very cheap and you are supporting GOG, the only website who treats its customers right.)

No, you get a license either way.

Which reminds me, GOG used to provide household licenses. This got changed to personal licenses without an announcement.

Steam let's you add any tag to games you don't own. I have tags for GOG and other Steam-less stores.

It's a great idea, and while I'm sure GOG isn't opposed to such an idea in some incarnation or another, truth be told that their limited developer resources will be busy for quite some time working on much larger impact features to the wider user base that I doubt we'll ever see any smaller features geared towards much smaller subsets of the user base such as us. It even makes sense sadly that if you have a finite number of developers, you are best allocating them to the features/functionality that caters to the wider user base for the best bang for the buck impact. The down side is that more niche and individual needs/desires get put off for a longer period of time if not indefinitely being trumped by more important things.

I'd suggest that the best way for us to get features of this nature is to talk to Barefoot and Adalia to try to interest them in adding such functionality to their respective awesome browser add-on scripts that a lot of people use, or alternatively a separate script even. Such solutions are not ideal, as they only work in the web browser(s) and only if someone has them installed, and do not work within Galaxy, but it is a start at least.

Ideally it will be added to the storefront and Galaxy at some point in time as the game catalogue grows and people find it more and more difficult to see relevant things being promoted and GOG struggles to find out how to reduce clutter and find an algorithm to show people more things they're actually likely to buy. That's what Steam has been suffering trying to do for years now and it is improving quite a bit on that front.

I find it quite difficult nowadays to find things I'm personally interested in at the right price point on GOG sales. Partially because the storefront lacks such features to make it easier to find things, and partially because I'm only willing to spend less time now to do so than I was willing to do 2-3 years ago when I bought lots of stuff regularly. 'Tis up to GOG to step up to the challenge of adding more options to the storefront user interface for sorting (by price (ascending+descending), by discount) and more filter options (filter by user given price ranges, by a wide variety of other criteria), and deep filters that allow you to indicate games you're just totally not interested in and would rather never see shown to you again in the store. I think that's where the topic suggestion fits in - not seeing games you already own elsewhere. GOG already can tap into our Steam account data so they could have an option to say "Don't show me promos for games I own on Steam already" at least for people who are linked up through GOG Connect. Even just doing it manually would be nice though.

GOG store tagging and any other options currently available do not meet any of the goals. They do not cause games on sale or otherwise promod to not show up on the storefront etc., and they do not provide GOG with valuable data on what we want to see and what we do not want to see.

This is a problem that can only truly be solved by a gradual evolution of the GOG store algorithms and with the ability for the customer to specify things manually at their option. It may be able to be worked around slightly in a useful way with client-side scripts but just about any solution done by 3rd parties will be a hack at best without store side support, and that's very unlikely to happen IMHO for years at the going rate. :/