Downfall Survival Sim

Downfall Survival Sim — rebuild civilization from a bunker, 123 years after the world ended in nuclear fire.

The bombs fell generations ago. All that's left is the wasteland — irradiated ruins, roaming mutants, and desperate raiders. A handful of survivors look to you to rebuild. Ration every scrap, hold the gate, and drag your settlement back from the brink.

SURVIVE THE FALLOUT
• Manage a living bunker — food, water, power, medicine, ammo, and scrap all matter.
• Build and upgrade rooms: hydroponics, water purifiers, armories, med bays, barracks, and more.
• Keep morale and bunker integrity up, or watch your colony collapse.

RECRUIT & COMMAND SURVIVORS
• Take in survivors with distinct roles — Scouts, Guards, Medics, Engineers, Farmers, Traders.
• Roles and skills matter: a Scout raises mission odds, a Medic softens ambushes, an Engineer slows machine wear.
• Level up your people through missions and gate defenses.

EXPLORE THE WASTELAND
• Send squads to scavenge across four distinct regions — Appalachia Ruins, the Rustbelt, the Mojave Glasslands, and the Dead Metro.
• Push deeper as you advance for richer rewards, at greater risk.
• Sites rotate and can be re-scanned, so the map keeps changing.

HOLD THE GATE
• Defend against waves of mutants and raiders at the east gate.
• Read the threat, weigh your success odds, and choose to fight, auto-resolve, or retreat.
• Research a full tech tree to reinforce the bunker and open new frontiers.

BUILT FOR YOU
• 100% single-player and fully offline — play anywhere, no connection needed.
• No ads and no forced timers. Deterministic, plannable progression.
• Your settlement saves automatically on your device.

Optional Survivor Mode is a one-time purchase that unlocks a developer "God Mode" console for players who want to experiment freely.

How long can your bunker hold the line?