Electronic Arts ( ERTS) lowered its estimates for the fiscal year ending March 31, primarily because of lower-than-expected sales in North America and Europe.The company's stock fell to $58.35 in late trading; it closed the regular session at $66.35. Other video-game software makers, such as Activision ( ATVI), Take-Two Interactive ( TTWO) and THQ ( THQI), slipped in sympathy. EA said after the bell Monday that it now expects revenue of $3.1 billion to $3.125 billion with earnings of $1.62 to $1.64 a share, and earnings before items of $1.70 and $1.72 a share. The company had previously expected revenue of $3.275 billion to $3.325 billion and earnings of $1.82 to $1.87 a share and earnings before items of $1.90 to $1.95. A Thomson First Call survey of analysts had expected the company to earn $1.93 a share before items on revenue of $3.3 billion. "These results are clearly disappointing," said Larry Probst, chairman and CEO. "While our new releases are performing reasonably well, they have not been able to offset a significant falloff in catalog sales."