Games may be too expensive.

That is the message Valve Software President Gabe Newell gave the assembled developers at the annual DICE Summit on Wednesday. While the topic of his keynote was the game industry's transition from retail industry to service industry, he revealed sales data from Steam that suggests games are too expensive.

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Illustrating his point, Newell showed the results of a Left 4 Dead promotion Valve ran last weekend, which cut the price of the game in half to $25. The discount (and promise of new content for the game) rocketed sales of the game on Steam by 3,000 percent.

"We sold more in revenue this last weekend than we did when we launched the product," says Newell. "We were driving a huge uptick in revenue and attracting new customers." And while people believe that we're "screwing" retail, Newell showed that brick-and-mortar sales were unaffected by the online discount. [Look at those suckers, happily living without the internet. They love paying maximum price. --Fussbett]

This phenomenon is not limited to Valve games. Over the holidays, Steam discounted third-party titles. Sales increased 300 percent and units-sold increased by 600 percent.

Discounting games does not only increase unit sales--it increases actual revenues. During the 16-day sale window over the holidays, third-parties were given a choice as to how severely they would discount their games. Those that discounted their games by 10 percent saw a 35% uptick in sales--that's dollars, not units. A 25 percent discount meant a 245 percent increase in sales. Dropping the price by 50 percent meant a sales increase of 320 percent. And a 75 percent decrease in the price point generated a 1,470 percent increase in sales.