Recently i've had a problem were the game would simply not launch at all when i tried it through galaxy 2.0 it's not a problem with the game itself, when i try to boot it up manually it works fine, it's something that makes so the launcher cannot launch the game for whatever reason.

I've tried several things alredy, i've alredy ran galaxy as administrator, alredy uninstalled and reinstalled, also tried verify and repairing the files, also have tried to make so the game doesn't play the intro, all to no avail, again the game works fine, it just doesn't lauch through galaxy 2.0

I haven't tried playing CIV recently but Colonization included with the CIV purchase doesn't even show up as launchable thru Galaxy so I just launch it from my files.

Hello, GoG has recently put out a patch that fixed the issue, now the game launches and now it launches directly to conquests.exe instead of vanilla CIV3, thanks for the quick response GoG, godspeed.

You have to launch it through the "additional execs" option (see screencap).