GOG
GOG (Good Old Games, part of CD PROJEKT) is a PC store focused on DRM-free games. It has a loyal community of PC players, but it's a curated/selective platform, you don't publish instantly like on Steam; you apply and your game has to be accepted.
This is an overview, not first-hand experience, I haven't launched on GOG (yet). The process itself seems fairly simple (you apply through the partner program on gog.com), but the hard part is getting accepted.
How it works
- You sign up for the GOG developer/partner program and submit your game for review.
- GOG is curated: they pick which games get in, unlike Steam where you pay the fee and publish.
- Games are distributed DRM-free, a strong marketing point for the GOG audience.
- The revenue split is generally similar to the others (around 70/30 for the developer).
Is it worth it?
GOG is a good market, but complicated in terms of effort/revenue. The audience is smaller than Steam's and you depend on being accepted. For a first game, the priority is usually Steam; GOG comes as a secondary platform, especially if your game fits their audience (RPGs, single-player games, classics, DRM-free).
Practical takeaway: keep it on the list, but not as your first target. Steam first (Steam), then GOG if the game catches on and fits their profile.