Image: u/burgric on Reddit · Riding a moped through Kasumi Courier’s neon city at night
Kasumi Courier: a 90s-style cyberpunk delivery game
The maker built a first-person delivery game with Claude: a moped ride through a rainy neon city with a satnav, phone and CB radio. A browser demo is free on itch.io.
Credits
Earliest dated source:
The full story
Kasumi Courier is a first-person delivery game set in a rain-soaked neon city. You ride an old moped from 22:00 until dawn with a satnav, a phone and a CB radio on the dash, delivering standard, fragile and priority parcels against the clock across four districts, with gangs, police roadblocks and blackouts changing the route.
The maker is a composer, not a programmer. They designed and directed the game over about seven weeks, and Claude (Opus 5.5) wrote around 24,000 lines of JavaScript with three.js, packaged with Electron. The buildings, cars and characters are pixel art drawn in code, and all three radio stations' music is synthesised in code from the maker's notes; one track is the maker's own composition.
The maker revised much of the writing for the branching late game themselves. A free demo covering the first in-game week runs in the browser on itch.io, and the full game is a PC download.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: I built a 90s-style cyberpunk delivery game with Claude: Kasumi Courier. The full version is out nowReddit poster: burgricPosted
The maker's post in r/vibecoding with the feature list and how the game was made.
- The project: amberglowgames.itch.io
The game's itch.io page with the free browser demo.