Germ Warfare (세균전)

Ataxx-style client-side PvE web game, shipped without a server.

Architecture

• Isolated the rule engine as a pure, zero-I/O module and made it the single source of truth, so client, AI search, and future server-side validation run identical logic.
• Routed all in-rule randomness through a seeded PRNG, making matches deterministic and reproducible for replays and server re-simulation.
• Captured 12 architecture decisions as ADRs, scoping multiplayer and monetization out to a separate app.

Game AI

• Move generation, board simulation, evaluation (infection gain, clone gain, risk exposure), then negamax with alpha-beta pruning at depth 3 and root move ordering.
• Built difficulty as parameters, not separate systems — search depth, evaluation noise, blunder rate — with the stage-authored base level split from the player-facing knob.

Content

• Generated a 20-stage campaign (4 chapters × 5) from data specs and builders, not hardcoded boards: terrain patterns, seeding handicaps, procedural village placement. Tests assert a monotonic difficulty curve and that every stage stays winnable.
• Generalized the two-team engine into N-team free-for-all, with a seat-based human/AI controller model for hot-seat local play.

Platform

• PWA: Service Worker precache for offline play, plus a manual update check-and-apply flow.
• Cross-device save transfer over binary QR codes, with QR libraries dynamically imported out of the bundle.
• Korean/English i18n, Web Audio BGM/SFX, DOM/CSS/SVG effects, audited asset and font licenses.
• GitHub Actions: push to main runs the test gate, then deploys to Pages.