How to transfer programs from to a flash drive or hard drive?

[Gandtee]

My son has downloaded programs i.e War Games and World of Tanks onto my PC diminishing my  available disc space. These are interacting games I believe. How do I remove transfer them to a memory stick or outside hard drive so that they will still be user interactive. Please make the answers simple as I am no computer expert and the old grey cells are fleeing the scene. 

[Daffy D]

You will need to reinstall the games on an external drive, you cannot just move the icon.

 

If you have an external or any additional drive connected to the computer then select that drive when installing the games you will get just the icon on desktop but the actual games will be on the extra drive and not filling up the system drive.