This expansion set for Dune The Boardgame adds two new houses to the game: the Ixians and the Tleilaxu.

Tleilaxu: Led by a small council of Tleilaxu Masters - the fanatical, xenophobic Tleilaxu are tolerated due to their useful superiority in genetic engineering. Although they are underestimated and detested by others, they hope to one day dominate everything.

Ixian: The cyborg, Prince Rhombur of House Vernius, leads the Ixians, masters of production and technologies that only they know how to harness.

Both the Ixians and the Tleilaxu are an integral part of the economy of CHOAM and the Imperium. The royal family of Ix was once one of the wealthiest in the Empire. Due to a successful invasion of Ix by the Tleilaxu and the Emperor's Sardaukar, and then, after many years, the liberation of Ix by Ixian and Atreides forces, the Ixians and the Tleilaxu are mortal enemies.