someone ordered Dragon game without my knowledge

Is this in regard to an email you have received? If so, it is most likely a scam. See the info below for steps to identify bogus emails.

• Apple does not include document, or PDF files to download.
• Apple would not refer to you as Dear Customer, Dear Client, or anything other than the name on file for your account.
• Apple would not have such horrible spelling or grammar. 
• Apple would not send a message to “Undisclosed Recipients”. 

It is a phishing attempt. Do not respond. Do not divulge any personal or financial information. You can use the address below to forward the suspect email message, as an attachment to Apple.

reportphishing@apple.com

The links below have information to help identify fraudulent emails.

Identifying legitimate emails from the iTunes Store

https://support.apple.com/en-us/HT204759

Is the game Dragons World? Just so you know, that is not an Apple game. The app store is just a store, it sells apps from many developers.

So, did you get an email? Or how do you know someone ordered it?