ANSWER:

If you know that such free games are hacked and pirated, it is not permissible to download and you must delete it immediately as this is stealing. 

There are some games or series which needs some money to be downloaded,but there are also some free versions of these things open for all in internt. Is it permissible for me to download the free version for only personal usages and not for mas production and profit? If not, then what to do with them if some are already downloaded.Love you a lot sheikh. May Allah bless you.