Go to Library>Installed. Here, you will see all the games that are installed. Right-click the one you want to clear the cache for and select 'Properties' from the context menu. Go to the Local Files tab and click 'Verify Integrity Of Game Files' to verify the game cache.How to reset games on Steam?
Manually restore the games Copy and paste the Steam game you intend to restore to: C:/Program Files (x86)/Steam/steamapps/common Launch Steam on your machine. Select the game and click Install.