When playing The Flame in the Flood exclusively for a while I had a dig around in the save games and saw parts of the implementations of the steam achievements. Like others have said, it's no simple thing to implement if a game wasn't designed to have achievments in the first place. But when they already have an achievement metric in the game for steam, it should be pretty easy for the company to adapt it to Galaxy's system I would think.

Some games benefit from achievements, because it can promote replaying it. The Flame in the Flood was fun to finish the achievements, and suited the endless aspects of the game. Without it, playing the game would still have been fun, but I probably wouldn't have played it as much. Other games it was meh. An afterthought and not a benefit.

Thank you very much for your patience and explanations. Same goes for other contributors of this thread. I know it should be obvious, but for some reasons, I couldn't get it around my head today. :)

I can see what you mean, but think about it: Steam doesn't "enforce" anything of Steamworks (not even DRM, because there are DRM-free games on Steam), you're free to publish a game on Steam even if it has nothing to do with Steam tools. GOG would really put away a lot of developers if they started to do it on their platform. AFAIK only Playstation and Xbox require the full "platform-support" (trophies/achievements, cloud saves, overlay etc.) in order to have their games released there, it would be a pretty new thing on PC. And a lot of people would not be happy about it. Devs offer Steamworks support because they know their customers want it, not because Valve forces them to. Maybe people should be more vocal with devs about what Galaxy features they want in their games.