Inspection sims (e.g., Papers, Please)
Quarantine Zone keeps the document-spotting tension but adds body checks, infection symptoms, contraband scanning, and the option to quarantine, research, or liquidate. Your calls ripple into resources and base safety.
Tower defense / horde segments
Defense is a timed mini-game triggered by alarms, not a full RTS. You pilot drones and shore up the gate while the core loop remains paperwork, screening, and triage.
Survival builders
No open-world scavenging here. The focus is a single checkpoint with morale, power, and supplies tied to how well you process survivors and handle outbreaks.