The game is presented primarily from a top-down exploration perspective, with separate screens for travel, settlements, conversations, and combat. The main objective is to investigate missions and survive expeditions across a hostile solar system.

Players move a party through Mars and other locations, speak with characters, examine places, acquire supplies, and resolve encounters. Combat uses turn-based positioning and weapon choices. Progress depends on completing assignments, gathering information, improving access to locations, and managing the party's equipment and resources.

• Keep essential ammunition, medical supplies, and expedition equipment available before leaving a settlement.

• Explore conversations carefully and record clues; objectives are not always stated in a direct or modern quest-log format.

• Avoid unnecessary fights when travel resources are low, and use the terrain and available cover during turn-based encounters.

• Save before major journeys or unfamiliar encounters because some expeditions can consume significant time and supplies.