The size of Downloadable version of Mass Effect 2 has today been revealed on the official PlayStation Blog. When asked Grace Chen the senior manager of the PSN Store said that the total file size was about 12 GB.
Chen then went on to announce that PlayStation Network Plus members will be able to play Mass Effect 2 for a full 60 minutes, on a full game trial, as soon as the game is released. Mass Effect 2 is going to be finally released on the PS3 on January the 18th.