Field Guide

Extracting Games from
Browser Platforms

Poki · CrazyGames · YouTube Playables · GameDist — Rev. March 2026

⚠ Legal Disclaimer

This guide is strictly for educational and archival research purposes. Downloading or redistributing games hosted on platforms such as Poki or CrazyGames may violate their Terms of Service and applicable copyright law. Games remain the property of their respective developers and publishers. Do not use these techniques to redistribute, resell, or commercially exploit any content you do not own. You did not read this here. Proceed at your own discretion and legal risk.

↓ Modified SDKs
LocalSdkForPokiAndCrazyGames.zip
Download
01 — Prerequisites

What You Need

Before starting, gather the following tools. Each one addresses a specific friction point in the extraction process.

VS Code
Primary workspace for inspecting, editing, and patching extracted game files.
Chromium Browser
Chrome, Edge, or Brave. Required for DevTools and extension compatibility.
Prettifier Extension
Unminifies JavaScript so you can actually read it. Essential for locating site lock code.
Resource Saver Extension
Bulk-downloads all page assets — scripts, images, paths — in one action. Far superior to Ctrl+S.
Modified SDKs
Pre-patched SDK files for Poki, CrazyGames, YouTube Playables, and GameDist. Replaces cloud calls with local storage.

Note: Ctrl+S and manual inspect-element copying are not reliable methods for full game extraction. Use a dedicated resource downloader.

02 — Core Concepts

How It Works

Site Lock
Platforms embed domain-check logic inside the game JavaScript. If the page's origin doesn't match an allowlist, the game refuses to run. The Prettifier extension makes this code readable so you can locate and neutralize the check.
Unity Games
CrazyGames titles are predominantly Unity-based. Their HTML wrappers carry significant boilerplate and bloat. Expect more cleanup work on these compared to lighter HTML5 games. The core game logic is typically inside a .wasm or compressed .js bundle.
Platform SDKs
Every platform injects its own SDK to handle ads, cloud saves, leaderboards, and analytics. These SDKs phone home — they will throw errors or block game initialization when run offline. The modified SDKs stub or redirect these calls so the game can run standalone.
Local Storage Saves
The modified SDKs reroute save/load calls from the platform's cloud infrastructure to the browser's native localStorage API. Progress is stored in your browser profile rather than on a remote server. YouTube Playables required only minimal changes to achieve this; other platforms needed more significant surgery.
Light Reverse Engineering
You will need to read JavaScript. It is not deep — no disassemblers, no binary patching. The workflow is: prettify → search for SDK initialization calls and domain checks → comment out or replace. Familiarity with browser DevTools is sufficient.
03 — Workflow

Step-by-Step Process

Open the target game in Chrome
Navigate to the game on Poki, CrazyGames, or your target platform. Let it fully load so all assets are fetched into the browser cache.
Run the resource saver extension
Trigger your resource downloader to capture the complete asset set — JavaScript bundles, WASM files, images, audio, and font references. This creates a local mirror of everything the game needs.
Open the download in VS Code
Load the extracted folder as a workspace. Use VS Code's global search (Ctrl+Shift+F) to navigate the codebase efficiently.
Prettify and locate the site lock
Run the Prettifier extension or VS Code's built-in formatter on the main JavaScript file. Search for strings like poki.com, location.hostname, allowedOrigins, or document.referrer. These signal domain-check logic. Comment out or remove the conditional that blocks non-platform origins.
Replace the platform SDK
Find the script tag or import that loads the platform's SDK (e.g. PokiSDK.js, CrazyGames.js). Swap it out with the corresponding modified SDK file. Update any file paths in the HTML to point to the local version.
Serve and test locally
Open the HTML file via a local server (VS Code's Live Server extension, or python3 -m http.server). Do not open as a bare file:// path — WASM and module imports will be blocked by CORS. Test all major game functions, especially save and load.
Fix remaining issues manually
Every game is different. Ad callbacks, authentication gates, leaderboard endpoints, and platform-specific APIs may all surface as runtime errors in the console. Address them case by case using DevTools.
04 — Limitations

Caveats & Warnings

Do not attempt to build a universal automation tool. Games vary far too much in structure, SDK version, and obfuscation technique for a generalized program to handle them reliably. Every game is its own manual job.
Unity WebGL builds (common on CrazyGames) are significantly more complex than lightweight HTML5 games. The compressed JavaScript and WASM bundles are large, and asset loading paths are often hardcoded.
The modified SDKs stub out cloud functionality — leaderboards, cross-device saves, and achievements will not function offline. Only local save state is preserved.
Platform SDKs are updated regularly. Modified SDK files may become outdated as platforms push changes. Expect periodic re-patching.
This process is for personal archival use only. Do not upload, share, or host extracted games publicly. That is a different and significantly worse legal situation.