Mystery of the Crystal Portal is an Android app developed by G5 Entertainment (Birger Jarlsgatan 18, Stockholm 114 34, Sweden).

Mystery of the Crystal Portal first became available on 16 Dec 2011. It is estimated that Mystery of the Crystal Portal has been downloaded between 1000000 and 5000000 times from the Play Store.

Mystery of the Crystal Portal 1.3 requires the following permissions:

Allows applications to access information about networks.

Allows applications to access information about Wi-Fi networks.

Allows access to the list of accounts in the Accounts Service.

Allows applications to open network sockets.

Allows an application to read from external storage.

Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.

Allows an application to write to external storage.