Chrono Heist
Free · play online in your browser, no download
A 2D stealth platformer in which you rewind three seconds to undo a mistake, and the rewound you keeps walking as an echo that holds plates and draws the drones' eyes.
Official site promptkettle.itch.io, verified Nov 3, 2026. Linked as “Play free” from the description of the developer's own YouTube devlog; the itch.io account and the YouTube channel share the PromptKettle name.
Where to play
Every platform this game is on. Links are checked against official sources; we never host or mirror games.
- Play free — itch.ioitch.ioReleasedFree
Plays in the browser on itch.io. No download.
Browser (no download) · Mobile · Official link verified Nov 3, 2026.
About Chrono Heist
A 2D stealth platformer in the browser. You play Echo, a thief who can turn back time, sneaking through Chronos Corp's tower past scanner drones, guards and laser grids, hacking terminals and stealing the core on every floor. If you are spotted, holding rewind unwinds the last three seconds, up to three times per checkpoint, and the seconds you undo replay as an echo of yourself that walks your old path, holds down pressure plates and draws the drones' attention, so mistakes become part of the plan. There are 15 floors in three acts, 15 Echo Trials after the story leading to a true ending, and 3 bonus floors (33 in all), with gold, silver and bronze medals for par times, data shards, a daily challenge with streaks, 20 achievements, 8 unlockable suits and an assist mode with slower detection. It plays with keyboard, gamepad or touch, and keys follow their physical position, so AZERTY layouts work without settings. The whole game is one HTML file of about 250 KB: every sprite, light and drone is drawn in code and the music is synthesised live. The developer, PromptKettle, says it started as an idea, one prompt in Claude chat and a stick person, and was built in four days of prompting with Claude Code, with Playwright bots testing it. Free on itch.io with no ads or account; donations are optional.
How it was built
Partially verifiedThe description of the developer's YouTube devlog “I Built a Stealth Game in 4 Days With AI Prompts (Full Devlog)” (29 Oct 2026) says: “Chrono Heist started as an idea, one prompt in Claude chat, and a stick person. Four days of prompting later it has 33 floors, two endings and it's free to play in your browser.” It lists the tools as “Built with Claude Code, Playwright bots, Python + ffmpeg. One HTML file, no engine, no image or sound files.” The video covers “the real prompts I used” and what broke, such as bots getting stuck on two floors; its chapters include “Day 1: Make it CrazyGames-ready” and “Day 2: Make it worth playing”.
- DeveloperThe itch.io AI disclosure ticks AI Assisted, Code and Text. — itch.io
Per the devlog description the game “started as an idea, one prompt in Claude chat, and a stick person”; Claude Code then built it.
One HTML file of about 250 KB with no engine and no image or sound files: every sprite, light and drone is drawn by code and the music is synthesised live. Playwright bots played the floors to test them; the devlog description also lists Python and ffmpeg. Keys are bound by physical position so AZERTY players move with ZQSD and on-screen hints follow the layout, and pause is on P rather than Escape so the browser does not leave fullscreen. Three save slots are kept in browser storage. The build makes no calls to AI services (checked 8 Nov 2026).
- Engine / framework
- None (single HTML file)
- Languages
- JavaScript
- Team size
- Not disclosed
- Initial build time
- Four days of promptingDeveloper ReportedYouTube (PromptKettle)
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
“Chrono Heist started as an idea, one prompt in Claude chat, and a stick person. Four days of prompting later it has 33 floors, two endings and it's free to play in your browser.”- I Built a Stealth Game in 4 Days With AI Prompts (Full Devlog) (YouTube)
- Chrono Heist is out: a stealth platformer where you rewind your mistakes (itch.io devlog)
Verification notes: AI use from the description of the developer's YouTube devlog (video UzgVdg7ykFU, 29 Oct 2026, channel @PromptKettle), re-read on 8 Nov 2026 through YouTube's public video data (26 views and 1 channel subscriber at the time, observed; not metrics); no transcript was available, so the prompts shown in the video were not read. The description says the game was built with Claude Code by prompting; it gives no share of AI-written code, so none is recorded. It also says “11.5 hours of work” went into the project in all and that “the game was the quick part”, without splitting the hours, so only the four days are recorded. Features, controls and the single-file build from the itch.io page and its launch devlog (29 Oct 2026, 08:03 UTC), re-read on 8 Nov 2026 (published 29 Oct 2026, 08:21 UTC; status Released; version 1.3.0 in the devlog files; no rating or download count shown). The build was checked: one HTML file with no AI service addresses and no external scripts besides itch.io's. Developer: the channel and itch.io account are both named PromptKettle and the channel's video speaks in the first person (“I Built…”); no name, team size or location is given. The game was not played.
Development history
Published on itch.io (08:21 UTC) as version 1.3.0, and the developer posts a YouTube devlog on building it in four days with Claude Code.
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.
itch.io
Free in the browser with no ads, account or microtransactions; keyboard, gamepad or touch. A donation through the support button also gives an offline copy to keep.
Not publicly available: itch.io rating, Gross revenue.
Reviews & rankings
Not yet reviewed by our editors.
Not currently ranked.
Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| I Built a Stealth Game in 4 Days With AI Prompts (Full Devlog) YouTube (PromptKettle) | Devlog | Oct 29, 2026 | Nov 3, 2026 |
| Chrono Heist by PromptKettle itch.io | Store page | Oct 29, 2026 | Nov 3, 2026 |
| Official game page (language check) PromptKettle | Official site | Not confirmed | Nov 3, 2026 |
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