There's been some criticism of "Boom Blox's" relatively weak sales performance compared to triple-A enthusiast titles like "Gears of War 2" and "Grand Theft Auto IV," but that is an apples to oranges comparison," said Billy Pidgeon, market research analyst at Game Changer Research. "Many games for the Wii have broad mass market potential and have a slower and longer sales curve than do enthusiast titles." As for Spielberg, he says he's learning more with every new game. The filmmaker actually once owned his own game studio. "The smartest and dumbest thing I ever did was to sell my company to EA," said Spielberg.