The usual features: Browsing the store, Buying games, Installing, Uninstalling, Achievements...
What does not
As previous submitter Ben Anderson said:
BEFORE installation, symlink $WINEPREFIX/drive_c/ProgramData to $WINEPREFIX/drive_c/users/Public. If you tried to install without the symlink, you will need to uninstall with `wine uninstaller` and start again from the top.
I also had to increase the upper limit of files that can be opened at the same time to prevent the client from freezing after some time. For systemd: Set "DefaultLimitNOFILE" in /etc/systemd/system.conf. 8192 works fine for me.
What was not tested
Galaxy self update
I installed 'corefonts' and 'vcrun2017' via winetricks in a fresh 32bit wineprefix, switched windows version to Windows 7 via winecfg, and applied the workarounds from above.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||Arch Linux x86_64||Dec 08 2018||3.21-staging||Yes||Yes||Yes||Gold||chris|
|Show||Ubuntu 18.10 "Cosmic" amd64 (+variants like Kubuntu)||Oct 23 2018||3.18-staging||Yes||Yes||Yes||Gold||Igor Zinovyev|
|Show||Ubuntu 18.04 "Bionic" amd64 (+variants like Kubuntu)||Sep 24 2018||3.16||Yes||No||Yes||Garbage||Aaron Franke|
|Current||Arch Linux x86_64||Sep 17 2018||3.16-staging||Yes||Yes||Yes||Gold||chris|
|Show||Ubuntu 18.04 "Bionic" amd64 (+variants like Kubuntu)||Oct 28 2018||3.0.3||Yes||No||Yes||Garbage||Mario Moritz|
|Bug #||Description||Status||Resolution||Other apps affected|
|15255||ntdll: The memory overview Page in Google Chrome is incomplete (MemoryWorkingSetList for NtQueryVirtualMemory)||NEW||View|
|36984||Multiple games and applications need 'mfc110.dll' ('winetricks -q vcrun2012' is a workaround)||NEW||View|
|37110||Steam requires Arial/Times New Roman fonts to open Store/Profile/Community pages||NEW||View|
|39663||GOG Galaxy client 1.x hangs or reports 'Something went wrong during DeelevateStrategy' error in Win7 mode (GOG Galaxy service needs wtsapi32.WTSQueryUserToken implementation)||STAGED||View|
|44074||GOG Galaxy Client is empty||UNCONFIRMED||View|
|44670||GOG Galaxy 1.2.37: crash in GalaxyClient Helper.exe||UNCONFIRMED||View|
As of August 2017
GOG Galaxy 22.214.171.124
Confirmed working on Wine Staging 2.13
GOG Galaxy installs all dependencies by itself
[Optional] Install vcrun2015 to fix self-update error
winetricks -q vcrun2015
Open Wine configuration (winecfg)
At the bottom, set Windows Version to Windows 7
GOG Galaxy Overlay and other in-game features