I downloaded firefox and tried to play online games but when I go to them, it says i have to download plugins (Flash, Shockwave, etc...) so i download them. Then, i use a different computer, I have to download flsh again. I think that it actually downloads it to the computer that I'm on. So when I look online it says to download them as extentions if its portable (what?) so if anyone knows how to make a portable version of flash for firefox that you don't have to install over and over... please tell me. For now I use Opera (portable) (because it comes with flash).
There are instructions on how to copy Flash to your portable installation on the FFP page. Here:
https://portableapps.com/support/firefox_portable
Sadly, Shockwave isn't portable, though. While you can copy the plugin to your drive, it's only a stub: The plugin expects to the find the actual Shockwave files on the computer you're using. The same goes for QuickTime, in case you were wondering.