The games maker Valve are in the giving mood to all fans of the Portal game, as they are offering the chance to download the music from the game so that it can be used as a ringtone for either the iPhone or Android powered device.
In fact, there are twenty tracks all together to choose from, although Valve have only released the first six for now.
Check out these cool sounds on the official Portal website, where they can be downloaded completely free of charge, how does that sound?
These are the cool ringtones for the iPhone or Android devices;
Turret Wife Serenade
Science Is Fun
The Friendly Faith Plate
The Courtesy Call
I Saw a Deer Today
Comedy Equals Tragedy Plus Time
Source [Nerd Approved]