The Gears of Corruption expansion to Expeditions adds elements of risk and danger in the form of secret bonuses on map tokens and a corrupted mech that roams the land. To counter these threats, the expansion offers 2 new mechs and 4 new character/companion pairs, as well as components for a 6th player. Gears of Corruption also accelerates early gameplay by giving players starting resources and a hero worker that can act as any type of worker.