Document-checking puzzle game where you're a border inspector in the fictional Eastern Bloc state of Arstotzka. Each day, you process travelers entering from neighboring Kolechia, cross-referencing passports, work permits, and entry tickets against shifting regulations. Spot discrepancies—expired dates, mismatched photos, forged seals—and decide who gets through. Your wage depends on processing speed minus penalties for errors. That money covers rent, food, and heat for your family in cramped housing. As terrorist attacks escalate, rules tighten: new countries get banned, fingerprinting becomes mandatory, moral traps appear. A traveler's papers might be incomplete, but their story checks out—let them in or follow protocol? An underground group recruits you to sabotage the regime. Scripted story mode offers branching endings based on compliance, compassion, or rebellion. Endless mode randomizes encounters after you've finished the campaign.
