Social gaming firm MindJolt has acquired mobile social developer SGN and online game portal Hallpass Media, each for an undisclosed sum. The acquisition effectively doubles MindJolt’s headcount to 80, gives it four million new users, and adds over 1500 new games to its network. MindJolt strengthens its mobile presence through SGN, whose apps like MiniTycoon Casino have been downloaded over 30 million times. MindJolt’s own mobile apps have also been downloaded over 30 million times. The Hallpass Media acquisition gives MindJolt access to a selection of valuable domain names including cookinggames.com, virtualpets.com, and dressup.com.