Shrinebreaker
A free first-person team spellcasting battle in the browser: three orders of mages guard their shrines and try to break the others'. The developer says Claude Code writes almost all of the code.
Official site shrinebreaker.com, verified Nov 3, 2026. Linked as the place to play in the developer's own Reddit post on r/ClaudeAI; the site's footer and structured data name Twisted Up Entertainment LLC as copyright holder and publisher.
Where to play
Every platform this game is on. Links are checked against official sources; we never host or mirror games.
- Play free — official siteBrowserEarly access · Live online game; the how-to-play page refers to early access, and the Druid class is on public trialFree
Runs in a desktop or mobile browser. No download.
Browser (no download) · Desktop · Mobile · Official link verified Nov 3, 2026.
About Shrinebreaker
Shrinebreaker is a free online first-person battle game for mages that runs in the browser, with nothing to install. Three orders, Cinder Vow, Moon Veil and Reed Vigil, each defend a Keystone shrine and fight over power pools in arenas drawn in a painted retro fantasy style: bias the pools to your order, wear the other shrines down and break them. You choose your order in the tavern before every match, so friends can fight side by side in one battle and against each other in the next. Every mage follows one of four disciplines, Elementalist, Warden, Runewright or Mindweaver, plus the Druid, a class on public trial with roots, groves and spirit beasts; spells unlock as you level up to 50, and each discipline has two ultimates. Match types include Conquest, Capture the flag, Free for all, Deathmatch, Escort and Warfront, in which three orders of 30 fight over four waystones, and bots of varying skill fill the teams when few players are online. Seasons, quests, feats, guilds and a weekly Hall of Honours sit around the matches. There are three interface styles and gamepad support, and an experimental Windows app with the art installed locally. The developer says the game is inspired by the 1990s online battle-mage games, naming Magestorm, and that “I direct it, and Claude Code writes almost all of the code”; the concept art and spell effects are made with Codex. The site names Twisted Up Entertainment LLC as the copyright holder. In English.
How it was built
Partially verifiedIn a post on r/ClaudeAI (3 Nov 2026, UTC) the developer writes: “I direct it, and Claude Code writes almost all of the code.” Everything is built with Claude Code (Opus 5.5) on a Linux machine that also hosts the live game. One main Claude session acts as producer: it triages the players' in-game feedback tickets and chat, writes briefs and starts background agents, each in its own git worktree and branch, which write tests, take screenshots and report back; the main session reviews, merges and deploys. Deploys go out only when nobody is online and are checked by a Playwright run against the live site, hundreds of test suites cover the server, bots, movement, spells, renderers and interface, and about 70 docs plus Claude's own memory files keep the decisions. Claude also writes the in-game replies to players whose tickets were fixed, and a Claude Code session drove the game with Playwright and OBS and cut the trailer with ffmpeg.
Per the developer's Reddit post, “Codex (GPT) makes the concept art and spell effects from briefs that Claude writes”; Claude binds the art into the game and reviews it against the style guide, and the developer approves it.
Directed by the developer, with Claude Code writing almost all of the code and Codex making the concept art and spell effects, per the Reddit post. The developer says the game took about five weeks, but calls that a little disingenuous, because lessons and much of the backend infrastructure came from a separate game in the works for over a year; the post counts more than 800 commits. Sound effects and music come from several places: some were bought from commercial sound libraries, voice-overs were made with ElevenLabs, some effects with Adobe Firefly, and many with Stable Audio run locally. The game has a GPU renderer with a CPU fallback. The developer puts the cost at about US$300 a month for Claude and GPT subscriptions, shared with the other game.
- Engine / framework
- Not disclosed (web app)
- Languages
- Not disclosed
- Team size
- Not disclosed
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
“I direct it, and Claude Code writes almost all of the code.”Verification notes: The AI claim rests on the developer's post on r/ClaudeAI by u/zrikz (3 Nov 2026, 20:38 UTC), read from the Arctic Shift Reddit archive; it links shrinebreaker.com. The site itself does not mention AI. Features come from the home page, the how-to-play page and the update notes (read 4 Nov 2026); the Reddit post adds team sizes of up to 33 a side. The release date is the first entry in the update notes, 5 Oct 2026 (“Shrinebreaker begins”; the same entry says the game now lives at shrinebreaker.com and that you sign in with Discord). The post's title figures (800+ commits, 80+ live players, thousands of hours of play) are the developer's own and were not checked; it is not clear whether 80 is a concurrent or a total count, so it is not recorded as a metric. Magestorm is named by the developer as inspiration only; the site lists no Magestorm names or assets. The shipped JavaScript of the browser game (about 2 MB, checked 4 Nov 2026) contains no OpenAI, Anthropic, Gemini, OpenRouter or Groq addresses; the bots are game logic. The Windows app was not downloaded. English only, as observed. Team size and location are not stated. The game was not played.
Development history
First entry in the update notes: “Shrinebreaker begins”, with the three orders, the new home at shrinebreaker.com and sign-in with Discord.
DeveloperTwisted Up Entertainment LLCThe Druid class goes on public trial, and the experimental Windows app reaches version 0.1.6.
The developer shares the game on r/ClaudeAI and says Claude Code writes almost all of the code.
DeveloperReddit (u/zrikz)
Game performance
Each figure measures something different — concurrent players, owners, downloads and sales are never interchangeable and are never added together. Labels show where each number comes from.
Browser (official site)
Free in the browser (the game runs at game.shrinebreaker.com); you sign in with a Discord account, per the site's update notes. An experimental Windows app (version 0.1.6 of 3 Nov 2026, 617 MB, unsigned) is offered on the site's downloads page.
Not publicly available: Monthly revenue, Gross revenue.
Reviews & rankings
Not yet reviewed by our editors.
Not currently ranked.
Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| 5 weeks building an online browser 3-team retro spellcasting game with Claude Code: 800+ commits, 80+ live players, thousands of hours of play and feedback. (r/ClaudeAI) Reddit (u/zrikz) | Social post | Nov 3, 2026 | Nov 3, 2026 |
| Shrinebreaker — a free team spellcasting battle in your browser Twisted Up Entertainment LLC | Official site | Not confirmed | Nov 3, 2026 |
| What's new — Shrinebreaker Twisted Up Entertainment LLC | Official site | Not confirmed | Nov 3, 2026 |
| How to play — Shrinebreaker Twisted Up Entertainment LLC | Official site | Not confirmed | Nov 3, 2026 |
| Shrinebreaker for Windows — download the experimental app Twisted Up Entertainment LLC | Official site | Not confirmed | Nov 3, 2026 |
| Official game page (language check) Twisted Up Entertainment LLC | Official site | Not confirmed | Nov 3, 2026 |
