I want to know if I download games when I play them.
For example,I download videos when I watch YouTube and files are saved in my temporally folder as caches.
Is the system of Vizzed same as YouTube?
I checked my temporally folder but I couldn't find data of games.
Does that mean I download nothing when I play games?

Well, if you want to be technical, you can't actually access a file without downloading it at some point. You used Youtube as an example... most people wouldn't actually consider watching Youtube videos as "downloading" them since they're never aware of any files being put on their computers. As you pointed out, there's a cache within your web browser and even things open within the browser store information on your computer in order for that computer to process it.

It would be impossible for you to play games on Vizzed without downloading some sort of data. If you use the RGR plugin, you obviously need that installed and then you need to download the games in order for them to be loaded into the RGR emulators. If you were to use the Java emulators, I don't imagine any ROMs get downloaded per se... but there's likely some sort of Java files that need to be downloaded into your cache at the very least in order to run the program.

Basically, you can't run what you don't have.

sevenrides : Although technically you are "renting" the games from Vizzed, the games themselves are stored on your local computer. Although this is different than a site like Youtube does this.

I'm not really sure how this makes a difference to you though, if you really want to keep the games and play them offline, just download the emulators and games from Vizzed sister site, Get-Your-Rom.com http://www.get-your-rom.com/

If you have any additional questions feel free to reply to this message.

Thank you for your answers.
Unfortunately I can't play games here if they're downloaded to my computer.
One of laws in my country prohibits people from doing it.