Setech Game Studio · making of
Neon City. Your city, at night, with a horde.
A cyberpunk 3D shooter in the browser, played on real streets – 600 m arenas around the market squares of Łódź, Kraków, Wrocław, Warsaw or Skierniewice, built from OpenStreetMap data. Solo or co-op, against zombie hordes.
The game is made by one person – Marcin Krzętowski at Setech Game Studio – working with a team of AI agents that have defined roles, hard limits and mandatory cross-review. This site shows what that looks like from the inside: the architecture, the art, the work with agents and the quality gates. No source code – but plenty of numbers, screenshots and bugs that got caught.
- ≈ 1630backend tests on every merge
- ≈ 940client tests
- 1.34 msp95 simulation tick, 3 ms budget
- 20 / 20arenas byte-identical across two runs
What’s inside
- 02
Architecture
A shared deterministic simulation, an authoritative server, client prediction, arenas from OSM and trams computed from time.
- 03
Art
Weapon framing control sheets, successive art packages, zombies from concept to model, trams.
- 04
AI agents
Roles, rules and the brief → report → review by another model → decision loop. The TRAM-1 case.
- 05
Quality
Mutation tests, a smoke run in a clean browser, pixel comparison, performance gates, a chart of the work.
- 06
Before & after
Eight before/after sliders: weapons, tram, zombies, trees, holograms, HUD.
- 07
Credits
Rights, attributions, AI tools, libraries and fonts.
- ▶
Gameplay
Gameplay footage – in the next stage.
coming soon