Steam allows you to access different builds through the "Betas" tab in the game properties if the developer has made older versions available.
While specific patch notes for every individual build number aren't always publicized, "Build 10339838" generally represents a state of the game during its early development. download-surviving-the-abyss-build-10339838
If you are looking to download this specific version, it is highly recommended to do so through like Steam. Steam allows you to access different builds through
Sending out submarines to find resources and blueprints in the surrounding trenches. download-surviving-the-abyss-build-10339838