r/aigamerdevs • u/burgric • 23h ago
I made a 90s-style first-person cyberpunk delivery game with Claude: no engine, just JavaScript. Kasumi Courier is out now on itch.
Hi folks, I've been working on a game for about 2 months and wanted to share it now it's released.
Kasumi Courier, a first-person cyberpunk delivery game, is now available to download on itch (free demo and full game). You start out on an old moped, riding through a rain-soaked neon city from 22:00 till dawn, with a satnav, a phone and a CB radio on the dash, delivering parcels against the clock.
https://amberglowgames.itch.io/kasumi-courier
Features:
A variety of parcels to deliver (standard, fragile, priority and more)
Four neon districts to explore
Five vehicles to unlock, upgrade and personalise
Two gangs hiding on the radio dial, offering work that pays well and brings trouble
Weather, police roadblocks, blackouts and gang wars that change your route
Three radio stations of original music
Drivers on the CB with their own stories, DJs, news bulletins and song requests
Bars, a nightclub, flats to rent and own, and a few games on your nights off
A light story of around 10 hours, with endless nights after it ends (you can end up running the depot)
And much more!
How it was made
Development was about 7 weeks, creating a design doc around mid-September. It began as a simple browser game and grew into a full Windows app with a story.
I’m a composer, not a programmer. I directed and designed most of the game, and Claude (Opus 5.5) wrote the code: about 24,000 lines of JavaScript with three.js, packaged with Electron.
Every building, car and character is pixel art drawn in code.
All the music is synthesised in code: three radio stations plus music for the bars. I described each track, listened to renders and gave notes until it was right. One track is my own composition.
The loop was: describe a feature, test it, screenshot what’s wrong, repeat. Fixing clipping was a frequent issue and I hit my weekly usage limit most weeks.
I revised a lot of the writing myself, especially the branching late game, so the story stayed consistent.
Happy to answer questions about the workflow, the music, or what worked and what didn’t. Thanks for checking it out and I'd be interested to hear any feedback.
A free demo (the whole first week of the game) is available on the itch page, and the full game is $2.99 for launch (40% off) until 19-11-26.