Newgrounds is a website that hosts community-made Flash animations and games that anyone can access for free. However, you can usually only play if you are connected to the Internet and visiting this site. You can save the Flash file from the Newgrounds website if you want to play the game offline, or just keep it on your own computer as a file.
Open the web page for the Newgrounds game you would like to save.
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Open the web page's source code on your browser's window. Click "View" then "Page Source" if you are using the Firefox browser. If you use Google Chrome, click the page icon, choose "Developer" then "View Source." This will show you the source code for the web page, including the exact filename for the Flash game.
Hold the "Ctrl" button and click the "F" key on your keyboard. This will launch a search in the page's source code.
Type ".swf" into the search box. This will search for all Flash files embedded on the page and display them one at a time. There will be more than one ".swf" file in the source code.
Click the "Next" button until you find the game's ".swf" file. You will know that it is the game's file because the filename will include the name of the game in front of the ".swf" extension.
Click and drag your mouse across the Flash file's entire URL to highlight it in the source code.
Right-click and choose "Copy" from the menu.
Minimize the source code window and return to your browser window.
Right-click the address bar of your browser window and choose "Paste" to paste a copy of the Flash file URL.
Press the "Enter" key on your keyboard to launch the Flash game file in your browser.
Save the Flash file to your computer. Click "File," then "Save Page As" if you are using Firefox. If you are using Google Chrome, click the page icon and choose "Save Page As."