The latest in a string of hacker attacks is Codemasters.
Another gaming company has been hit by hackers, with UK-based Codemasters admitting to be attacked.
An email sent out by Codemasters has admitted to its customers that details have been compromised by hackers on June 3.
Personal data including user names, encrypted passwords, addresses, emails, names, order history and telephone numbers are believed to be stolen. Codemasters said that since no personal payment information was stored with Codemasters, credit card details were not at risk.
Codemasters stated in its open letter that as soon as the "unauthorised entry" was detected, the website was taken offline immediately.
It also said the website will remain offline for "the foreseeable future"; all traffic will be sent to its Facebook page, with a new website to be launched later this year.
The company has advised users to change passwords for other accounts that uses the same login information.
It said: "Unfortunately, Codemasters is the latest victim in on-going targeted attacks against numerous game companies. We assure you that we are doing everything within our legal means to track down the perpetrators and take action to the full extent of the law."