The game was developed in 2003-2004 by Vladislav Demjanishin with some updates later; as of 2018 last patched version is 1.5295, October 2017. It is now freeware, though initially a non-free unlocker was needed for some campaigns.
Download Dune IV
We might have the game available for more than one platform. Dune IV is currently available on these platforms:
Additional files, patches and fixes
Dune IV Screenshots