NovelToGame is seven open-source skills for the coding agent you already use (Claude Code, Codex, or Kimi Code). Give it a novel and, if you have one in mind, a target platform or engine. It reads the whole book, chooses a game direction it can defend, designs the world and the look, builds for the runtime the brief locks, and proves the build plays in one recorded run. You get a playable build at the finish level you asked for, plus the design documents behind it. The two examples below are browser games and include links to their playable builds.
Play Online
Each game links to the adaptation workspace behind it: source provenance, the concept and the directions it rejected, game and art direction, runnable source, and the QA record from the playable path.
Journey to the West · Three Borrowings of the Banana Fan
One wave of a fan blew you fifty thousand li. Walk back, take the quest, and win the mountain one turn at a time.
A Fantasy Westward Journey-style turn-based RPG built on chapters 59–61. Click to walk four painted scene maps, find the NPCs marked "!", let the quest tracker auto-path you there, and take the repeatable demon-bounty daily between story fights. Earn experience and silver, shop, swap gear, study skills and field a pet; then win command-turn battles with the five-element wheel, rage stunts and Wukong's seventy-two transformations, until a demon king who outclasses you ends as rain over the Mountain of Flames.
Play in browser · Adaptation workspace · design estimate: 45–90 min · all ages · playable prototype
Jin Ping Mei · Ledger of Desire
That spring, five doors kept a lamp lit for you. Whatever you say, they remember.
An interactive-film romance set in the Ximen household the spring after Li Ping'er marries in: after each choice that matters, a short voiced cutscene acts out what you just changed (who walks out, who brings you a bowl, whose face falls), and the next lines are read as captions over its last frame. A common route puts all five women at one table, in one night of rain and at one Qingming feast; what your choices build with each of them decides which courtyard doors are still lit on the night the routes split. Each of the five heroine routes has a good, an ordinary and a missed ending (16 endings, counting the one where no lamp is left), and every heroine ending turns to a fixed page of what the novel does to her (the no-lamp ending turns to Ximen Qing's death and the household scattering). Public quarrels are timed, and staying silent is an answer with its own branch; in two scenes you can study the picture first, and spotting the right detail gives you something to say; on the rainy night you hold a key to keep your lamp alight; a seal marks the lines a heroine will remember; and a story tree lets you replay any chapter you have reached. Auto, read-only skip, backlog, hide, quick save, thumbnail saves and rollback are there, with a CG gallery, a cutscene gallery, scene replay, music room and ending flowchart.
Play in browser · Adaptation workspace · design estimate: 20–30 min per route, 1–1.5 h for all five · 18+ · playable prototype
What it is
The skills run on your coding agent's model and organize adaptation into stages. Each stage owns a document, with source evidence separated from design choices:
- Key source facts carry citations. Analysis reads the whole book and writes a
SOURCE_BIBLE where every hard rule, key character goal, turning point and ending, and signature anchor carries its chapter or file location, and every adaptation-boundary row cites its evidence. Source facts are labelled immutable, adaptable, open, or conflicted; anything the novel does not define is marked a design invention, never smuggled in as fact.
- The game shape is a documented decision, not a default. The concept stage compares real alternatives and kills directions with named hard vetoes (the core loop ignores the novel's central tension; strip the proper nouns and a generic template remains; the player only spends resources to release a fixed plot). Concept, world design, and art direction are written by different stages into different documents, and the build may not quietly redesign them.
- A borrowed genre comes with its shell. Players recognise a genre by more than its core mechanic, so a systems game lists which parts of the genre's shell (entering the world, objective guidance, progression and reasons to return) it implements, degrades, or drops and why, and what the first minute shows. A Fantasy Westward Journey-style RPG is not shipped as a bare chain of fights.
- Built for the runtime the brief locks. The product brief, the one-page requirements sheet the agent drafts first, locks platform, engine, target runtime, and the runtime actually available for testing. A missing toolchain may not silently become a web build. The design documents are engine-independent Markdown you own.
- QA is one real run, six checks, and written limitations. The build is launched on the tested runtime and one complete execution proves
launch, render, input, coreLoop, outcome, and restart. Untested environments are listed as limitations.
- Voice is opt-in and generated at build time by default. No line goes to a text-to-speech provider unless art direction chooses voice; runtime synthesis needs the product brief's explicit approval, and the novel and design documents are never uploaded.
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