Dune 2 eXtended

Dune 2 eXtended is a mod of Dune II for MS-DOS, inspired by the old mod Super Dune 2. The project started in 2007 and as of 2018 last version is 1.29 (2013).

As in Super Dune 2, the three playable houses in each campaign are replaced with Mercenary (yellow), Sardaukar (purple) and Fremen (brown). The original houses still appear sometimes as computer players. Each new house has a completely new campaign and different characteristics. Some mentat graphics were grabbed from the game Dune.

This campaign can also be played with modern interface within Dune Dynasty.

Official site
There is no real official site, only a forum topic:

http://forum.dune2k.com/topic/18360-dune-2-extended-project/

files (DuneX129.zip):

http://nyerguds.arsaneus-design.com/dune/dune2x/