Dune: CHOAM & RicheseThis expansion adds two new factions, the CHOAM and the Richese, to the Dune boardgame, along with 2 new variants. The Combine Honnete Ober Advancer Mercantiles or CHOAM controlled much of the economic affairs across the cosmos, and had a keen interest in Arrakis above and beyond spice production. Because of its control of inter planetary commerce, CHOAM was the largest single source of wealth in the Imperium. Influence in CHOAM was a major focus of