How to install iso games on pc?

[USB]

So i installed a few games from the bay and was looking to play them, however i have no idea what to do and what programs to use, thanks

[RobertX]

Two ways:

Mounting
Use a program like Daemon tools to mount the image (ISO) and run the installer (usually install.exe or setup.exe).

Burning to ISO/Copy to USB
After using Nero to burn to ISO or Rufus to USB, using the burnt media, run the installer (again, install.exe or setup.exe).

Hope this helps.

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EDIT: One thing I forgot to mention:

Most games have cracked .exe files that will allow you to play them; in some cases, without these, you won't be able to run them. Just copy the crack over the original .exe of the same name, and you should be golden.

I am out to lunch with newer games as my systems are old and obsolete. But you might have better luck. If my original solutions don't work, make sure you follow the instructions provided by the released material to the letter.