Summary: I bought this game in April and played it for a while. Then it started to ask me for the activation code last week. When I entered the code, the software told me the code has been used, and asked me for a new code. So basically I can't play it any more.
Summary: we bought the pc version for our kids (ages 8 and 11) not so long before my kids finished all the levels I am not sure about the android or the ios versions but the pc version is not challenging at all for their age and I am not sure that it is even fun for older ages of kids or adults