All Will Fall - Demo introduces a city-building premise shaped by instability: the full game is described as a physics-based 3D city builder combined with colony simulation and survival. Its setting is organized around changing water levels, which can expose new areas to explore. Rather than treating the city as a static construction project, the design puts environmental shifts alongside resource management and decisions made under pressure.
The listed systems give that premise its strategic texture. Players are expected to manage resources and contend with survival mechanics, while random events force difficult choices. Several factions are part of the full game’s design, and visual customization offers ways to distinguish one city from another. These details point to a blend of settlement planning, exploration, and adaptation, rather than a building game focused only on arranging structures.
The full game is described as including scenarios with distinct challenges as well as a robust sandbox mode, setting up both directed and open-ended ways to approach city building.