[i]Sam Houser is one of the leading lights of the videogame era. A secretive, demanding workaholic, he also has a temperament and a budget befitting a Hollywood mogul.

His latest creation, "Grand Theft Auto IV" -- part of the urban-action franchise that lets players roam a gritty virtual world of gangsters and prostitutes -- carried stratospheric production costs. One person familiar with the project recently pegged the figure at roughly $100 million, a range Mr. Houser doesn't dispute.

Both Houser brothers have strong tempers, people who have worked with them say. When game-industry publications give less-than-stellar ratings to Rockstar titles, say former employees, Sam has his staff to "go war" with offending publications to demand a better review or score.[/i]

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