If you want to free up some space on your computer, you can uninstall some chunky games. Fortunately the Steam games client makes the process of uninstalling their games easy.
Simply launch Steam client on your PC, Mac or Linux computer, then click on ‘Library’ from the menu bar at the top.
You should see a list of all the games installed on your computer. Right click on the game you want to uninstall, select ‘Manage’ and then click on ‘Uninstall’. Now you can sit back and let Steam uninstall the game for you.
If you had purchased a game, no need to worry because the game will still be attached to your Steam account. So you can re-install it again; even on a different computer as long as you’re using the same Steam account.
Watch: Uninstall Steam Games