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The game is called cyberpunk; the city generator is its first subsystem, not the project. The citygen library keeps its name. README reframed around the game. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
cyberpunk
A terminal roguelike in a full cyberpunk setting. You will play it on foot through a multi-level city, and later from inside the Net as well.
The first subsystem is in place: a seeded, deterministic city generator and the full-screen terminal app that lets you generate, explore and walk its cities.
The generator builds a city as walkable tile maps on four strata:
| Stratum | What lives there |
|---|---|
| Heights | rooftops of the tall towers, helipads, bridges between them |
| Skyways | elevated walkways, mid-rise lobbies, platforms over intersections |
| Street | districts, arterials, blocks, buildings, markets, neon |
| Undercity | tunnels under the roads, sewers, a rail line, basements, black clinics |
Every building you see at street level is the same building you stand on at Heights. Districts have themes (corp core, night market, megablocks, combat zone, docks, industrial, neon strip, old town) that drive street layout, building mix, palette and signage. A Net graph of subnets, nodes and links is anchored to the physical tiles and can be shown as a digital overlay. That graph is the seed of the cyberspace side of the game.
Same seed and parameters always produce a byte-identical city.
Run
cargo run --release -p cyberpunk
Headless generation, for scripts and tooling:
cargo run --release -p cyberpunk -- gen --seed 42 --size medium --out cities/demo.city
cargo run --release -p cyberpunk -- gen --seed 42 --size large --json --out /tmp/demo.json
Sizes: small (160x80), medium (240x120), large (320x160) or WxH.
Other flags: --districts 4..12 (an upper bound; slivers merge into their
neighbours), --water none|bay|river, --density 0..1.
Needs a truecolor terminal of at least 100x30 cells (iTerm2, Ghostty, kitty,
WezTerm). Saved cities go to ./cities/*.city.
Keys
Title ↑↓ select · enter confirm · q quit
Configure ↑↓ field · ←→ adjust · type digits into the seed · enter
on RANDOM SEED / GENERATE · esc back
Generating space pause · + - steps per frame · enter skip to the
end · r reseed after an error · esc back
Explore hjkl / arrows pan (shift: fast) · [ ] stratum down / up ·
w walk · i inspector · m minimap · e legend · d digital overlay ·
s save · r regenerate · g configure · ? keys · q title
Walk hjkl yubn / arrows move · < > take stairs, lift, ladder or
manhole · . wait · tab back to the free camera · panels as above
Layout
crates/citygen world model + city generator (no terminal dependencies)
crates/cyberpunk the game: ratatui app, screens, renderer, and the `gen` CLI
flavor/ names.ron (names, signage glyphs) · style.ron (palettes, glyph sets)
docs/superpowers/specs design specs
docs/superpowers/plans implementation plans
Develop
cargo fmt --all --check
cargo clippy --workspace --all-targets -- -D warnings
cargo test --workspace
cargo test -p citygen --test seeds -- --ignored # 250-seed sweep