The post-apocalyptic game City 20 has entered early access on Steam. Until September 30th, it's available at a 15% discount.
City 20 is an open-world sandbox set in a secret nuclear city that was quarantined after a radiation leak. The protagonist is one of the settlement's residents who must survive, using resources and surrounding people to their advantage. One of the game's features is a world that changes depending on the player's actions.
At launch, players have access to a location with several biomes, two factions, a survival system, a crafting system, and a system for interacting with NPCs. Multiplayer will be added to the game in the future.