BioWare has confirmed that the space opera Mass Effect for the PC is now available in stores across North America.

Originally released for the Xbox 360, it has been over hauled and fully optimized for the PC. Mass Effect includes a new Tactical Heads-Up Display, higher resolution visuals, an enhanced inventory system, fully optimized controls designed specifically for the PC, individual squad control and a new decryption mini-game.

“Bring Down the Sky,” the first in a series of planned downloadable content that will further expand the Mass Effect story and universe, will soon be available free1 of charge for registered BioWare community members to download. It includes a new uncharted world that introduces the deadly Batarian alien race, approximately 90 minutes of new gameplay and an original soundtrack.