There are many online flash games now on the internet.
In this trick, how to download that online flash games and play offline.
First, what we have to do is to download the SWF file from the address where the flash game is.
for example my flash game is from gamesfree.com, the complete address for the game is https://www.gamesfree.com/game/cow_marathon.html
An easy way to download is using file2hd.com
Open your browser, go to https://www.file2hd.com
Click on picture to enlarge
1. Paste the link of game address
2. Checklist the term service agreement
3. Choose Filter to Objects
4. Click Get Files, then wait for searching the files.
5. See the result, and look for the SWF file name related to the game
6. Right click the file link and choose save link as (mozilla) to download
7. Save the file.