This specific release represents a late-stage Early Access or early stable build of Subnautica . Build numbers in the 70,000 range typically correspond to the period shortly before or after the official 1.0 launch (January 2018).
A key decision for players is which version to use. Here's a comparison of the three main builds: Subnautica V71288-P2P
The "P2P" suffix typically indicates that the files are distributed through file-sharing protocols. While this allows for downloading specific builds, players should be aware of the following: This specific release represents a late-stage Early Access