I've not played Conan, but Dune looked like ARK to me. Not sure what I think TBH.
Dune: Awakening on Steam
Rise from survival to dominance on the most dangerous planet in the universe. Dune: Awakening combines the grit and creativity of sandbox survival games with the social interactivity of a large, persistent multiplayer game to create a unique and ambitious Open World Survival MMO.
store.steampowered.com