Those who bought Red Alert 3 during Steam's holiday sale are finding themselves with a partially useless game purchased at an admittedly excellent price. Steam users report that the downloaded copies of Red Alert 3 don't include serial numbers, which the game requires for online play.
A similar issue occurred recently through Steam with the digital sale of Spore. That problem seems to have been resolved, and at least one Red Alert 3 player has been able to rectify the current error, though the solution required the game to be re-downloaded directly from EA (complete with SecuROM DRM). Still, EA's eventual intervention in Steam's Spore issue is a possible sign that these Red Alert 3 woes will be alleviated in a more timely manner.