75%Strong matchNew Cycle
83%1k83% positive reviews, Very Positive across 1k reviews·City Builder · Survival
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Survive in a living post-apocalyptic city. Build trust or spark conflict with NPCs and factions, uncover mysteries, and watch the world change with your every choice.
The Bunker Update has paved the way for countless new possibilities in our development roadmap. While we are incredibly proud of this milestone, the game is still far from complete. Our team is fully dedicated to adding a massive amount of new content, including expanded mechanics, more NPCs, new items, and deeper storylines.
Take a look at our roadmap below for a glimpse into the future!


City 20 was a closed city, a place that didn't exist on any map. Behind its walls, scientists pushed the boundaries of nuclear physics and quantum mechanics. Then, something went wrong. Sealed within their own nightmare and in a world now devoid of rules, the survivors gave rise to a new, brutal ecosystem divided into factions. You find yourself in this ruthless reality alone and empty-handed. How far will you go to survive?

Obtain food by farming, hunting, or interacting with NPCs. Scavenge for materials and salvageable components. Disassemble objects to recover parts to craft equipment. Purchase properties and furnish them with appliances and workbenches to produce advanced items. Restore the electrical grid to bring power back to abandoned buildings and unlock new areas. Endure lethal nuclear radiation as you try to carve out your place in the city.

All NPCs follow dynamic routines. They work, eat, rest, and react to a changing world. Every interaction you have with them carries weight, influencing your relationships and unlocking new possibilities. Learn about the factions, their organization, and their identity. Each pursues long-term goals that you can alter with your decisions. Earn their trust to unlock restricted areas, crafting stations, and supplies, or defy them and face the consequences. No path is already written. Your actions shape the future of those around you, deciding who thrives and who falls.

Not everything in City 20 can be explained by science. Strange creatures roam the city's ruined buildings - a phenomenon never seen before - and no one knows where they came from. You can fight them, but understanding what they are and why they appeared might be the real challenge.

City 20 is in active development. Join now to play, influence development, and get the game at its lowest price before 1.0!
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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