Turmoil, the fifth expansion to Terraforming Mars, takes players back to Mars, and the struggle for control and progress of human society on a big and dangerous planet.
Terraforming Mars: turmoil is an "expert" Expansion, which will increase the game experience for hard core players of this game. The new card type, global events, can help or hinder players, based on whether they have paid attention to the changing political climate on Mars. New corporations and new project cards are included as well for those long-time players of the base game.
The expansion includes new corporations, new projects, and a new type of cards - Global Events, from dust storms to riots to rising alloy demand - that give you something to plan for.