Michael Pachter is all but certain the Mass Effect trilogy is going multiplatform. In the latest episode of GameTrailers' Bonus Round (start about three-fourths of the way into the video), Pachter notes that, given the financial expectations Electronic Arts has with its recently-acquired developer, Mass Effect 2 "has to, has to" come to the PlayStation 3 in addition to the Xbox 360.
More interesting is what Pachter says after his ME2 assertion. "I wouldn't be shocked if Mass Effect One came to the PS3," he said. We aren't sure the exact details of EA's acquisition, but we do know the original Mass Effect was published by Microsoft Games Studio, leading us to assume it was a safely exclusive title. Could EA port and publish the game on Sony's console? We doubt Microsoft would be willing to let that platinum-selling title go without a fight.