Several open-source GitHub projects use L-systems (Lindenmayer systems) and agent-based simulation to generate modern highway and street networks. Users can adjust "grid-iron" versus "organic" sliders to mimic cities like New York (strict grid) or London (historical evolution).
Every great city forms around a geographical feature. Choose whether your city sits on a peninsula, bridges a massive river, or is carved into a mountain valley. Let the generator build its initial roads around these natural obstructions to ensure the layout looks organic. Step 2: Establish the Core Hubs
: While primarily fantasy, its "Modern" or "Night" presets (accessible via right-click settings) can transform layouts into convincing contemporary town maps. Modern City Map Generator
High control over city size, coastal features, and river placements. 2. CityViewer (by CityForge) Best For: 3D modern metropolitan visualization.
Several tools have risen to the top of the field, offering varying levels of detail, style, and export capabilities. 1. ProbableTrain City Generator Choose whether your city sits on a peninsula,
: Quick, procedural layouts that don't need to be perfectly grid-based.
Map Legend
Before generating, understand what the map is for. If it’s for a chase scene, you need to prioritize narrow alleys and major thoroughfares. If it’s for a city-planning game, prioritize grid structure.