Even if we were to hypothetically sweep aside Galaxy and speak of it as a standalone game, let's take a moment to think about this, logically.
1) The game is obviously built using a 64-bit build kit. This automatically shuts out most WIndows XP use cases; especially since 32 bit has a hard 4 GB limit.
2) Windows XP is 20 years old. That's ancient for operating systems.
3) I can't imagine any GPU modern enough to run the new Myst has anything resembling compatibility with WinXP. Same for any CPU. Remember, CPUs were still single core when XP was new.
4) Even if you managed to beat all these limits, there is a DirectX11 minimum requirement.
5) Ignoring even the DirectX requirement, I can't imagine the remaining required libraries having ever been compiled for Windows XP.
At this point, WIndows XP is a historical relic. You should not, and there is literally no reason to be attempting to use it to run a new game 20 years newer than it is.