A low-poly, rain-soaked neon city you can swing across — Insomniac's Spider-Man web-swinging feel, dropped into a Blade Runner grid. Built by Alex Coulombe Presents.
The whole city — streets, traffic-light-obeying cars, rain, neon towers — is procedurally generated from a single seed, so every load is the same city, ready to explore.
No build step, no install — it's one self-contained HTML file pulling Three.js from a CDN.
git clone https://github.com/ibrews/swing-city.git
cd swing-city
python3 -m http.server 8377
# open http://localhost:8377Click to enter (pointer lock gives the best mouse-look; it'll fall back to a raw mouse-look mode automatically if your browser/embed blocks pointer lock).
Controls — keyboard/mouse, gamepad, touch, and WebXR all work at once and drive the same actions, so mix and match freely. The in-game controls panel (bottom-left, collapsible) always reflects the current build; this is the short version.
- Mouse / right stick / touch drag (right half of screen) / XR right-stick — look around
- Tap left-click, Space, gamepad A, or an XR trigger — jump (hold through it to also fire a web if a building's in range)
- Hold left-click / Space / gamepad A / touch WEB button / XR trigger against a building — swing; against a bare wall — climb it Spider-Man style
- W/S (or push the stick forward/back while attached) — reel the rope in/out; A/D still steer the swing normally
- WASD / left stick / touch joystick (left half of screen) / XR left-stick — run / air control
- Shift / full-stick deflection / right trigger — sprint
- R / gamepad X / touch R button — respawn on a nearby rooftop
- Sprint into a car to knock it flying — chain hits on multiple cars within ~1.6s for a score combo
- 16 power-up orbs (giant, tiny, flight, speed, invincibility, disco mode with its own procedural beat, and more) each spawn as a YOU-only version and a ringed EVERYONE-affecting version
index.html is the playable game. city_generator.py is where the city design actually comes from — a Blender/Python procedural-city generator, written as small documented functions (not string-exec blobs) specifically so it's easy to read and retune. The JS city in index.html is a faithful port of that file's layout math, window-facade shader logic, traffic-light cycle, and stop-and-go car simulation — same seed, same city, now swingable.
The city is a grid of blocks with two-lane streets in both directions, dashed lane lines, sidewalks, and buildings built from stacked tapering segments (not flat boxes) with glowing window grids, rooftop crowns, antenna spires, and street-level neon signs. Traffic runs a real signal cycle — cars accelerate, brake for red lights, queue bumper-to-bumper, and release on green, with about a quarter of them making right turns.
- Click "click to enter" and just walk around — WASD moves you, the city should feel alive with traffic queuing and releasing at the lights below.
- Aim up at a nearby building and hold the web button — watch the reticle in the center of the screen turn green when a web will connect, then swing. Release at the bottom of the arc to fling yourself forward.
- Walk up to a building and hold the web button against it instead of jumping — you'll climb straight up the wall.
- Sprint into two or three cars in a row without stopping — each knock rolls the car based on how fast you hit it, and chaining hits stacks a score combo.
- Chain two swings in a row without touching the ground — hold W while swinging to pump momentum, then release-and-immediately-fire-again toward the next building.
- Press R a few times — you'll respawn on a different mid-height rooftop each time, always surrounded by taller neighbors so your first web always has something to grab.
- Stand at a street intersection and watch a full signal cycle — cars stop, queue, and release; watch for one making a right turn through the intersection on a proper arc.
Everything about the layout — grid size, block size, street width, building height mix, traffic density, rain amount — lives in one CONFIG block at the top of city_generator.py. Change a number, re-run the generator in Blender, see a different city. The JS port in index.html mirrors the same constants near the top of its <script> block.
Off by default — the game only connects if loaded with ?mp=<websocket-url> pointing at a deployed instance of the relay in multiplayer/. It's joust rules: land on top of another player to explode them (Fortnite/fly.pieter.com-style). A live session leaderboard and an all-time daily leaderboard track everyone in the room. See multiplayer/README.md for the one-time wrangler login && wrangler deploy to get your own live URL (free Cloudflare tier covers a casual room easily) and how to test it locally with no login at all.
Click Enter VR (bottom-center, only shown if your browser/headset supports it). Starts in first-person — arms and a jousting-rod view-model stand in for your body; right controller B (or double-pinch the left hand on pinch-only devices like Vision Pro, which has no physical buttons) toggles to third-person, where your full pawn is visible and the camera orbits behind you. The camera only ever turns on yaw (a flat turntable) in either mode — swinging, falling, or looking around never tilts the view, for comfort.
Right stick: X always smooth-turns yaw; Y snap-turns in first-person, smoothly pitches the camera in third-person (real head tilt already covers first-person pitch, so the stick doesn't fight it there). Left stick moves and, once attached to a swing, reels the rope in/out exactly like W/S on desktop. Either trigger fires a web/jump; left controller X exits VR, Y respawns, left stick click toggles the HUD. On Vision Pro's pinch-only input, left-hand pinch walks forward and right-hand pinch fires the web.
A sun/moon arcs across the sky, cycling through the same day-drift color palette as the boundary wall. Remote players' active power-ups (glow + cape recolor) are visible to everyone in multiplayer, not just the player using them.
Built by Alex Coulombe Presents.