If you are looking for a "free" experience related to the game's title, there are various Minecraft mods and independent projects with similar names that are legally free to play. From the Depths on Steam
Occasionally offers the game at a discount or as part of bundles. Purchases here also provide a Steam key. Check the Humble Bundle Store . From the Depths Free Download (v3.4.2.1)
You can learn more about the game's features and community on the Official From the Depths Website. If you are looking for a "free" experience