Unknown Worlds does not officially distribute old builds via Steam (Steam always forces the latest version). However, you can legally access v71288 if you own the game via or Depot Downloader .
Are you trying to download this specific build to use a ? subnautica v71288 download
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Unknown Worlds does not officially distribute old builds
Note: Disable automatic updates for Subnautica in your Steam settings to prevent the client from immediately overwriting your older build with the newest live version. Accessing the "Legacy" Beta Branch on Steam This public link is valid for 7 days
Subnautica v71288 Download: Everything You Need to Know About This Build