I use it since alpha and it's really just a game-launcher and -updater for me. But this is something it does really well. I also use it for chat, which is more convenient than through the browser, although I really miss the old PM system, where I had a lot of meaningful conversations with people... now it's, well - chat...

What I also like is to see how much time friends spent with games I also play. Nice way to know who to go for help.
I'm indifferent about achievements, I occasionally look at them to see how far I might be into a game.

I don't use overlay. I find stuff like that distracting from the game and also it eats performance (my machine is rather low-end and slowly dying of age).

Overall I don't get all the hate Galaxy gets. What it does it does well. In terms of "DRM",,, well. Galaxy will happily launch games you don't even own (I showed a game I have to a friend on his machine, and his Galaxy install recognised it, it just showed a warning - the end was he bought the game too, because he liked it). It will probably not update them, but that's fine.

I write my notes about games in a plain text file and add HTML links such as for the game page on the GOG website or to where the game is installed on my computer. I can view that in whatever web browser (HTML viewer) and thereby skip any clients and even skip whatever operating system. GOG Galaxy doesn't provide a means for me to record my thoughts and notes about a game.

I use the GOG website to download the games. I have a custom cascading stylesheet (CSS) for viewing webpages out on the WWW, so that means my view of the GOG website is customized how ever I like. GOG Galaxy doesn't offer that.

A plain text file is forward and backwards compatible, and cross-platform. Every computer comes with a basic text editor and an HTML viewer (a web browser). All I need is <p> for paragraphs, <ul> and <li> for an unordered list and list items, and <a> for anchors (HTML links). Well, I also like to use accented letters, so I prepend the file with <meta charset="utf-8"> so the HTML viewers will interpret the letters correctly. No need for any other html.

I can even start a game with a link. Admittedly that's by either using the eww web browser in emacs, or by starting a simple webserver within emacs and then using any web browser. I modified how eww handles requests so it will launch an application (t.i. a game) for me, even an installer for a game. On the other hand, I can't easily modify other web browsers, but there are a few basic emacs webservers on github, and are so much simpler than webservers used on the WWW. In that case, modifying one of the examples provided for whichever emacs webserver is chosen can make it launch an application (f.e. a game) when receiving a request from any web browser. In other words, I don't need the operating system's pointer using interface for launching applications, and instead I use my own from a plain text file with HTML links.

For me GOG Galaxy certainly is not as simple and customizable as a plain text file with HTML links, and I dare say GOG Galaxy will never be as rock-solid stable nor as cross-platform and future/past compatible with computers. But then again, neither is an operating system.

i use it to install my games, occasionally i use it to play games but usually play offline. its fantastic to auto update my whole library in one go, which I do a couple times a month. it also allows me to toggle off auto update for my modded games so they dont get corrupted. when not updating I dont turn galaxy on, i dont need the data mining or cpu usage which used to be high, not sure how its now.

Useless for modded games.

Depends on if the game has some type of mods folder...

If they game is modded though you should have patches disabled anyway and only update once the patch is confirmed to work wtih mods... Galaxy has no bearing on this. Updating with standalone installer would cause the same issue if the mods overright game files.

I use it on my main computer. Have no complaints.

I have it installed now.

Only because I wasn't paying attention and installed it while installing D:OS. Will probably uninstall it when I'm done with that, but I don't care too much about it either way.

That said, I do occasionally forget which games I have installed, so some organization wouldn't be the worst thing. Maybe.

I have never really needed it. Offline installers work just fine, and after that I just double-click what I want to play, like in the old days. ;)

I'm using it. Guess it also sends report on crashes since I want them to improve it.

Mostly as a library organizer.