Gharuwill: cross-saves between GOG and Steam...
Raze_Larian: Saves are already compatible on PC between Windows/OSX, GOG/Steam/App Store.
On the same system, Steam and GOG use the same folder for profiles/saves, and you can switch back and forth between them.
I don't know if Galaxy has any plans for syncing with Steam's cloud saves.
It is possible to download / upload / delete online saves for the Steam version with the program
Steam Cloud File Manager Lite (
download). You need to be logged in to the Steam client and have the game's AppID (435150), so this would primarily be useful to sync online if you don't have the Steam version of the game on that system.
You could use Dropbox, etc to share saves between different people (ie if someone in a multiplayer group wanted to do some crafting or shopping in advance of the group play session).
Hm... hold on, is this not gonna be an issue Steam side? As in, storing files in their cloud service using an external app for a game you don't own?
It seems to me that either Steam doesn't mind and then I agree with Gharuwill, it'd be cool if the game itself handled it, or Steam does care and then it seems a bit iffy to do it.
Either way thanks for the tip, I'll give that a shot, it just seems like a hacky way to get around the issue.