Alien Invasion

Four alternate modes for humans and the alien faction.

The official Scenario Book includes four chapters with distinct ways to play. Add this optional expansion only after learning the base game; each chapter has its own setup and victory conditions.

Chapter 1: Assault on Mars

One player commands the alien faction while the others cooperate as humans. Humans pursue the scenario’s investigation and colony goals; the Alien Commander disrupts the colony through alien deployments, sabotage and interference. The chapter rules replace selected base actions and provide a separate alien turn.

Chapter 2: The Invasion

The human players cooperate against the invasion. The time track and alien pressure create a shared deadline. Complete the scenario goals before the aliens overrun the colony; follow this chapter’s distinct setup and victory test.

Chapter 3: Martian Potato

This survival scenario asks the colony to satisfy a linked set of agricultural and settlement goals. The chapter changes setup and action details, including special handling for Hospitals; consult its own component and gameplay rules.

Chapter 4: Monolith

Players investigate a mysterious structure using the chapter’s added objectives and special rules. Prepare the Monolith-specific board pieces and follow its unique end condition.

The Scenario Book has complete setup, turn and end rules for each chapter. The publisher’s expansion page also lists the included Alien Commander board and components.