BioWare has announced that key retailers across North America will be offering $10 off for all pre-orders of Mass Effect for PC, due to be available on May 28 in North America and June 6 in Europe. Gamers will receive the $10 discount by pre-ordering Mass Effect at both specialty and online retailers including GameStop, Amazon.com and GoGamer.com. Gamers who pre-order Mass Effect through the Electronic Arts online store will receive bonus items2 from the game Dead Space, the sci-fi survival horror game by EA, including the first issue of the Dead Space comic book and a Dead Space poster while supplies last.