Made by Claude Opus 5.5, with Sonnet 5.5 and Fable 5.1, instigated by Brandon Hoult.
Six small first-person shooters, each made under a tight limit: three in x86-64 assembly that fit in 64 or 256 KB, one in 6502 assembly for the Commodore 64, a Rust port with no libraries that also runs here in the browser, and one in a single HTML file.
Source, build steps and the GPL license: github.com/bhoult/mini-games.
The fractal-world shooter rewritten in Rust under the assembly version's rules, and built for the browser too. Every pixel is ray marched on one CPU core, so it renders at a low resolution that the browser scales up. Shatter every glass crystal, then step through the portal.
Generated sectors with materials synthesized on the GPU. Find and destroy the reactor core in each, with four weapons and generated sound.
Seven kinds of 3D fractal megastructure, eroded terrain, a physically based sky, water with caustics, glass gems with dispersion, six weapons, a grapple and bosses, all ray marched on the CPU on every core.
FRAKTAL256's ancestor, under 64 KB: fractal terrain, Menger-sponge structures, reflective water and glass crystals to shatter, world after world.
A corridor shooter in the spirit of .kkrieger: a per-pixel ray caster with ray-traced shadows from every lamp, procedural materials, robots and a guardian in each sector.
KRIEG64 demade for the Commodore 64: a ray caster in multicolour characters at 12-17 frames per second, scaled and depth-sorted robot sprites, three sectors and SID music.