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arrjayjee: 1. When will the Linux client for Galaxy be available?

2. Will GOG begin adding support to store pages for games that support Galaxy features? I personally enjoy earning achievements and stuff and I would like to know which games support them.

3. Will GOG add a "Linux" section to the store, similar to what Steam has done, to showcase the games available on Linux?

4. More communication re: Witcher 3 Linux version please! I finished my first run on Windows 7 but I've since ditched Windows completely. Any chance the Linux version will be ready by the time the expansion content is finished?
For question 3:

Go to Games then down at the bottom you have "Linux games". Click that and you'll see every Linux game we have on offer.

Unfortunately, I don't have an answer for your other questions :/