The original zero-shot build, then rebuilt to excellence. Layered SVG paper-doll dress-up: four diverse characters and six profession costumes on one shared body skeleton, with drag-or-tap dressing and gentle order enforcement (socks before shoes). GSAP (bundled locally) drives the choreography; a dedicated Audio department synthesized every cue procedurally via Web Audio — a pentatonic chime that climbs the scale as you dress, a friendly two-note 'not yet,' and a fanfare finale. QA'd by eye, not only by structure: every costume was rendered as a settled frame and inspected on multiple characters, which caught and fixed three real defects — base underclothes peeking through costumes at the pelvis, a rack tile that rendered invisible (an entrance tween killed a frame early), and underwear that did not follow the body silhouette. A performance pass then moved all continuous motion to GPU-composited CSS, capped the frame rate, and pauses when the tab is hidden — so it stays cool instead of pinning a core.

The original zero-shot build — and the collection's first WebGL game. Real-time 3D via Three.js (r128, bundled locally, no CDN and no network request). Each fighter is an articulated humanoid of primitive meshes in a joint hierarchy; attacks are per-joint poses with phased startup / active / recovery windows. The fight logic runs on a fixed 60 Hz timestep decoupled from rendering: frame-data hitboxes live only during active frames, height-checked blocking, decaying knockback with juggle decay, hitstop, and special-move detection from a rolling input buffer (quarter-circle motions). A range-bucketing CPU picks weighted actions with a reaction delay; a side camera tracks the midpoint and dollies back as the fighters separate. All sound is procedural Web Audio — impact, block, whiff, jump/land, fireball, KO, round-start and victory cues, the smack of a hit scaled by its power.

The original zero-shot build. The crux here was not physics but twin-stick input (gamepad plus mouse), horde management, and progression feel. Passed headless QA on 2026-07-18: no console errors, twin-stick gamepad mapping verified (left stick move, right stick aim and fire), mouse and WASD verified, combat kills enemies, XP to level-up to upgrade flow works, player death to game over works, and an 8-second horde run stayed bounded with no NaN. Canvas render sanity-checked during play. INCOMPLETE — this generation never finished Phase 5 (Polish & Ship). Its audio is still the placeholder stub (the file is literally commented 'placeholder stub — replaced by the Audio department'); the Audio department never delivered, and the source has not been modified since QA. The game was also never committed to the workspace repository, never registered in the static launcher's GAMES array, and ships no README of its own. Treat it as playable but unlanded.

The original zero-shot build. A custom rigid-body simulation: a chassis with two wheels doing spin-based traction (friction opposes the slip between tyre surface speed and ground), wheelies from a rider weight-shift model, free rigid-body air rotation under lean torque, suspension that absorbs landings, and crash rules. Heightfield terrain sub-stepped at 1/240s so fast wheels cannot tunnel on steep faces. The Audio department synthesized a continuous throttle-tracking engine plus landing/crash/finish sounds procedurally via Web Audio. QA'd against headless physics tests (settles at rest, accelerates and rolls, pops wheelies, flips in the air, all demo tracks completable) plus editor round-trip checks.

The original zero-shot build. A Physics R&D pass produced the SI reference the engine implements; an Audio department synthesized all sound procedurally via the Web Audio API; the core was authored and QA'd against headless physics tests — draw reverses the cue ball, follow drives it through, breaks settle, nothing tunnels or sticks.