Hi there
I can't seem to find an FAQ for game developers, or a sub forum. is there such a thing? The only link on the main GOG website is to "Submit your game".
Any leads would be appreciated.

This isn't a game developer forum, just a storefront with a forums for the games they sell. You can submit what you have created but that's it. Depending on the tools you use as a dev there are forums for each software, e.g. Unity, and general ones. Not sure what exactly it is your after, selling or dev chat? You can also find most information under support, e.g.
https://support.gog.com/hc/en-us/categories/201552985

Thanks for your reply. Unfortunately that support section is not very useful for developers or potential game submissions. I'm looking for information such as how GOG promotes games, how a game becomes "featured", who decides on sales and reduced prices etc.

Drop support an email, to start the discussion. They will run through all your points, and I am sure some of those will be specific to certain devs which is why there isn't a set plan.

OK, will do. Thanks for the advice.

That's a good question! While GOG.com doesn't have a dedicated public forum specifically for game developers, there are still ways to get the information you need. Here are a few options:

GOG Support: Their support center might have articles or FAQs relevant to game developers. You can search their knowledge base or contact them directly if you have specific questions.
GOG Developer Portal: While it might not be a forum, the GOG Developer Portal offers resources and documentation for developers interested in publishing on GOG. Check to see if this answers your questions about the platform and its requirements.
GOG Galaxy Forums: The general GOG Galaxy forums might have discussions or threads from other developers. You could try searching there or posting your own question to see if anyone in the community can help.
Here are some additional resources that might be helpful for game developers in general:

GameDev.net Forums: A large and active forum community for game developers.
Unity Forums: If you're using the Unity game engine, their forums are a valuable resource.
Unreal Engine Forums: Similar to Unity, the Unreal Engine forums cater to developers using that engine.
Developing a game requires a variety of assets and tools. If you're looking for high-quality 3D models, textures, code snippets, or other development resources, check out the extensive selection available at the Next Level Gaming store Next Level Gaming store.

Hopefully, this helps!