itch.io

to download follow these steps 

Method 1: Using the Official App

The easiest way to "download" and organize web games is by using the official client. [1]

1. Download and install the itch.io app.
2. Log into your account and search for the game you want.
3. Click the Install button. The app will cache all the necessary web assets, allowing you to launch and play the game directly from your library, even offline. [1, 2, 3]

Method 2: Manual Download (For Web-Only Games)

If you want to grab the raw code to play in your own web browser:

1. Open the game page in your browser.
2. Right-click anywhere on the page and select Inspect (or press Ctrl+Shift+I on Windows/Linux or Cmd+Option+I on Mac).
3. Go to the Network tab.
4. Refresh the page (F5) and play the game for a few seconds.
5. Filter the network requests by Fetch/XHR or type index.html in the filter bar. Right-click the .html file, select Open in new tab, and save it to your computer. [1, 2]