From The Depths Free Download (v3.6.3.2) -

To get the full experience, including thousands of community-made blueprints and regular updates, it is recommended to purchase the game through official channels. From the Depths on Steam

Cracked versions cannot access the Steam Workshop, which is the heart of the game's community, and they typically lack functioning online co-op features. From the Depths Free Download (v3.6.3.2)

Users looking for specific older versions often do so for mod compatibility or because of specific mechanical changes they prefer. However, the most stable and feature-complete experience is always found in the latest official version available via Steam. Why Avoid Unofficial "Free" Downloads? To get the full experience, including thousands of

Adjustments to how buoyancy, drag, and structural integrity affect your builds. However, the most stable and feature-complete experience is

Understanding "From the Depths": Accessing the Creative Sandbox

You will not receive official bug fixes or technical support for unofficial copies.