Why just Steam? If we're going to talk about other gaming sites, let's talk about all the ones that we have experience with.
Epic is one of my favorite other stores because they keep giving away free games every Thursday (and sometimes daily during sales.) I have a long list of games, some available on GOG and some not, that I got through this store. I bought Costume Quest on GOG, then Epic gave me Costume Quest 2 for free. A lot of the games (not all of them) are properly DRM-free and will work without the Epic launcher or an online connection.
Itch is another nice storefront IF you like indie developers. There's been some games that have shown up here on GOG that I first heard about due to having played the demo version on itch. Yes, the site has a lot of game jams and things of questionable quality, but there really is some good stuff if you're willing to look around. Even some of the game jam stuff is worth playing. Some of my favorites from this site (not on GOG) include the other Chook & Sosig games, A Good Snowman is Hard to Build, Back Home for Christmas, Beasts of Maravilla Island, Catlandia, Character Sheets Please, Cuckoo Curling, Little Things Remastered, Self-Checkout Unlimited, and Vignettes.
IndieGala is an odd one. The site has the absolute worst launcher, and the website isn't much better. It's also full of porn games and Steam keys. However the freebies are always without DRM and downloaded from the IndiGala site/launcher directly. Another oddity of this one is that there's games in the launcher's freebie section that don't show up on the website's freebie section as if the thing is so bad that they forgot to go in and remove it. I really do mean games that are not free on Steam, GOG or any other site that they show up on... like 2Dark is still there, which is $24.99 (US) on Steam. Fortunately once a game is claimed through the launcher, you don't need to use it to actually play it.
There's also FireFlower Games. While I haven't bought anything there, I do recognize some of their freebie stuff as things that are also available on Itch.
As for Steam, the thing I like about Steam is that their forum require you to have actually purchased a game yourself in order to post anything. I think that GOG should do the same thing as it might help prevent the forums here from being spammed up by bots during what are the evening hours for my time zone.
Post edited August 02, 2023 by Catventurer