 After some PlayStation 3 players reported that their save files can become corrupted if the game crashes unexpectedly, BioWare released a patch designed to combat save bugs and crashes experienced.The PlayStation Network version accounted for more than 10% of the game's overall sales on PlayStation 3.As of April 2011, it was reported that both the original "Mass Effect" and "Mass Effect 2" combined had sold more than seven million units worldwide.