The objective of the mission depends on the facility type being infiltrated, usually requiring the player to retrieve a specific item from a secure location and escape, stealing as much money and equipment as possible along the way. Certain stations can let the player purchase upgrades or equipment for the agents to help in the mission, using collected in-game money. Once the player has completed their turn, any enemy forces move, and in most locations an alarm level is raised with higher alarm levels, new security forces and threats will arrive, making the mission more difficult. Additionally, the player may need to collect power to be able to use «Incognita», the hacking interface that allows them to disable alarms and security cameras or remove locks on safes.

Each agent under the player's control has a limited number of action points each turn that allow them to move, open/close doors, take out guards silently, or perform other covert tasks. Missions are played out in a turn-based manner. The mission details and location layouts are procedurally generated for each run through, featuring a variety of objectives, obstacles, and difficulty. The player selects 2 agents to perform these missions to start, and may be able to free other agents during missions should one agent die during a mission, they remain dead for the remainder of the runthrough unless dragged to the exit by another agent, while if all agents die, the game is over. This is done by performing various missions across the globe to retrieve information, valuables, equipment and personnel, keeping cognizant of the amount of time taken for travel and missions within that 3 day period. In each playthrough, the player takes on the role of an agent handler for covert operations and has three days to prepare for their final mission. The game is a turn-based tactics based-game inspired by X-COM, with emphasis on stealth and espionage.

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