Grand Quack Auto
An open-world duck crime game: honk at pedestrians, steal cars and evolve from Lil' Quacker to gun-wielding Duck Norris.
Official site grand-quack-auto.pages.dev, verified Nov 3, 2026. Linked from the official Vibe Jam 2026 games data as the entry URL submitted under the X handle @UdayMydam. No developer-owned page links the game: the game page has no credits and the X profile does not mention it.
Rights holder / original work: Grand Theft Auto (Rockstar Games / Take-Two Interactive); names playing on Jackie Chan, The Godfather, The Notorious B.I.G., Chuck Norris and James Bond
The title and the page's description (“GTA but you're a rubber duck”) parody Grand Theft Auto, and an in-game objective reads “Commit grand theft auto”. The duck's evolution stages include “Quackie Chan”, “The Quackfather”, “Notorious D.U.C.K.” and “Duck Norris”, and the pedestrian names in the game's script include “Agent Double-O-Duck” and plays on Italian “brainrot” meme characters (such as “Bombardino Quackadilo” and “Tralalero Rubberduckini”). No Grand Theft Auto logos, characters or assets were found in the game's files, and no source shows a licence or permission for any of these names. Untitled Goose Game is named by the entrant as a comparison only. (grand-quack-auto.pages.dev)
VibeGameDB lists this game only to document that it was made with AI coding tools. We do not host it, we do not represent the rights holder, and listing it does not mean it is licensed.
Where to play
Every platform this game is on. Links are checked against official sources; we never host or mirror games.
- Play free — official siteBrowserReleasedFree
Runs in a desktop browser. No download.
Browser (no download) · Official link verified Nov 3, 2026.
About Grand Quack Auto
An open-world comedy action game in the browser in which you play a rubber duck loose in a city. You waddle around with WASD, quack with Space to scare pedestrians and press E to climb into cars, and the chaos you cause makes the police escalate and evolves your duck through seven stages, from Lil' Quacker and Puddle Punk through Quackie Chan and The Quackfather to Duck Norris, who carries a gun. Pedestrians shout lines such as “HELP! DUCK ATTACK!”, and the game has a day-night cycle and a photo mode. The page describes it as “GTA but you're a rubber duck” and as 100% AI-coded; the entrant's pitch calls it “GTA meets Untitled Goose Game, 100% coded by AI”, and a line in the game reads “Built with Claude Code (Opus 4.6) for #VibeJam2026”. It was made for the Cursor Vibe Jam 2026, whose rules required at least 90% of each game's code to be written by AI; the official submission lists Claude Code as the tool. It finished 153rd of 945 entries. Free in the browser, played with a keyboard.
How it was built
Partially verifiedIn the official Vibe Jam 2026 submission the entrant lists Claude Code as the tool, answers Yes to the AI-written field and pitches the game as “100% coded by AI”. The game page's description calls it “100% AI-coded”, and a line in the game reads “Built with Claude Code (Opus 4.6) for #VibeJam2026”. No devlog describes how Claude Code was used, and the sources do not say who or what made the 3D models and sounds.
- DeveloperGame page: “100% AI-coded” in its description, and “Built with Claude Code (Opus 4.6) for #VibeJam2026” in the game. — grand-quack-auto.pages.dev
- OfficialJam rule 3: at least 90% of the code has to be written by AI. — Vibe Jam (Pieter Levels)
Built for the Cursor Vibe Jam 2026 on Three.js, with Claude Code (Opus 4.6, per the game's own credit line) named as the tool. The game uses a physics library for the duck and cars and loads 3D models for the duck's stages, pedestrians and vehicles as files.
- Engine / framework
- Three.js
- Languages
- Not disclosed
- Team size
- Not disclosed
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- ~100% of shipped codeDeveloper Reportedgrand-quack-auto.pages.dev
“GTA meets Untitled Goose Game, 100% coded by AI”Verification notes: Tool (Claude Code), engine (ThreeJS), genre (Action, Adventure, RPG, Simulation), pitch, inspiration (“GTA + Ducks”) and the multiplayer (No), mobile (Yes) and portal (Yes) flags from the entrant's answers in the official Vibe Jam 2026 games data (submitted 11 Apr 2026, 15:31 UTC; final rank 153 of 945 entries, no award), re-read on 4 Nov 2026; rule 3 on the jam page requires at least 90% AI-written code. The entrant answered No to the jam's “free web accessible” field, but on 4 Nov 2026 the game loaded free with no sign-in. The AI code share of 100% is the developer's own claim on the game page and in the pitch. Developer: only the jam data ties the game to the X handle @UdayMydam (display name “Uday M | AI Apps Builder”); the game page has no credits and the X profile does not link the game, so the attribution rests on the official jam entry. No full name, location or team size is recorded. The entrant's mobile answer is recorded in the jam data, but the game's own start screen shows keyboard controls only, so the listing is marked as browser only. Controls, evolution stages, police and pedestrian lines come from the game's script; the game was not played. The game's code was checked for calls to AI services and none were found. The jam page's widget counters showed 579 plays and 1,900 portal transfers for grand-quack-auto.pages.dev on 4 Nov 2026 (observed; plays are sessions, not players or downloads, so neither is recorded as a metric). The release date is not stated; the jam submission is dated 11 Apr 2026.
Development history
Entered in the Cursor Vibe Jam 2026 (submission date in the official games data, 15:31 UTC); the jam required at least 90% AI-written code. Final rank 153 of 945 entries, no award.
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)
No public metrics recorded for this listing.
Not publicly available: Concurrent players (site), Monthly revenue, Gross revenue.
Sales & revenue (all platforms)
Browser game — there are no downloads to count.
Reviews & rankings
Not yet reviewed by our editors.
Not currently ranked.
Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| Cursor Vibe Jam 2026 — rules, prizes and game stats Vibe Jam (Pieter Levels) | Official site | Not confirmed | Nov 3, 2026 |
| Vibe Jam 2026 games data (entrant submissions, final rank, awards) Vibe Jam | Official site | Not confirmed | Nov 3, 2026 |
| Grand Quack Auto — An Open-World Duck Crime Simulator (game page and script) grand-quack-auto.pages.dev | Official site | Not confirmed | Nov 3, 2026 |
| Uday M (@UdayMydam) — X profile X | Social post | Not confirmed | Nov 3, 2026 |
| Official game page (language check) grand-quack-auto.pages.dev | Official site | Not confirmed | Nov 3, 2026 |
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