William Temple, who works at medical insurer HealthNet Inc. in Sacramento, Calif., was announced today as the winner of the $250,000 grand prize from Microsoft Corp.'s "Vanishing Point" promotion, qualifying him for a 2009 flight that would blast him 62 miles into the air -- to the edge of outer space. In a random drawing, Temple's name was selected from among those of the 87,000 registered players of Vanishing Point, an interactive puzzle game sponsored by Microsoft and Advanced Micro Devices Inc.

The monthlong game involved arcane puzzles and cryptic clues that were handed out to would-be puzzle solvers via Las Vegas light shows during the Consumer Electronics Show, skywriting above four cities, coded images projected onto monuments and a fireworks finale above Seattle.

Temple was chosen as the winner last Tuesday despite freely admitting that he had accumulated only 370 points out of the 1,500 maximum and that after solving the first puzzle on his own, he benefited from solutions posted on the Internet by other game players. According to Microsoft, any player could win, but a higher number of points increased someone's chance of winning.

"We had some people who solved every single puzzle," said Aaron Coldiron, a Vista manager at Microsoft. "But we feel good about Will winning. He's right in the target demographic."

That demographic, according to Microsoft, was men who are between the ages of 18 and 35 and are interested in technology. Reaching that group via conventional advertising is increasingly difficult and expensive. Coldiron said the total cost of staging the Vanishing Point game was "less than a single Super Bowl commercial." The going rate to air a 30-second spot during this year's game was as much as $2.6 million, which doesn't include the costs of producing the commercial.