blitz4: Thank you. I unchecked the auto-update for my games, some have that option, some don't, not all versions are listed. I think this is up to the dev, not gog, to allow users to download older versions. Found you can test it on Shadow Tactics: Blades of the Shogun Demo.
Auto update option is available for all games. I have mine disabled globally for all games. If you are talking about rollback then yea not all games will have that due to the reasons I listed above. I'm not sure but I don't really think it's up to the devs. When a dev pushes a patch to Galaxy it automatically creates a snapshot of sorts for rollback. Usually if that snapshot is unavailable it's because the update that was pushed has something that broke the game or something so it was pulled from the rollback feature.
blitz4: Witcher 3 is exactly the game I was thinking about that happened most recently, how dev patches break older mods that add more to the game than devs patches.
In Steam, you're just forced to use the latest version your screenshot would convince me to ALSO buy Witcher 3 on gog if I knew I'd always have access to those older versions.
Anyway, I don't think a year is enough to get
Ucross's mod working again though (needs 1.09 I think). Thanks a million for the screenshot.
Yea you can't really go back that far after the fact. You however do have more options with GOG compared to Steam as far as updates and being able to rollback.
Also if you buy a game early enough after release you could always keep every standalone installer after every update so that you have all versions. You can download those on the site or via Galaxy under MORE -> Backup & Goodies but only the latest one is available so you would have to get in on it earlier to get all versions.
EDIT: Just keep in mind the standalone installers take a few days to update manually by GOG, they are not instant like regular updates on Galaxy.