Still Alive, the famous (on the Internet) ending theme to Portal, will be arriving on Xbox Live tomorrow as a free download for Rock Band. And no, this is not an April Fool’s joke. The song will come to PSN on April 17.

If you think this quirky song’s catchy lyrics haven’t yet been completely run into the ground due to their Internet meme status, just wait until it gets even more attention through Rock Band. “This is a triumph,” “huge success,” “it’s hard to overstate my satisfaction.” Sigh.

DLC April 1st! Huge success! [Rock Band Forums via Joystiq]