The game has a 60% discount on Steam right now [1], but not on GoG [2]. Is the Steam version DRM-benign? e.g. Is it similar to Kerbal Space Program where you could just copy the folder out to another location (or a new PC) and play it without Steam having to be installed?
[1] https://store.steampowered.com/app/275850/No_Mans_Sky/
[2] https://www.gog.com/en/game/no_mans_sky