Day of Defeat: Source, Valve's World War II-themed multiplayer action game, is approaching beta and will be available early this spring via Steam. A team-based multiplayer game that cast players in the Axis vs. Allies battles of Western Europe circa 1944, Day of Defeat: Source leverages the power of the Source engine to introduce integrated physics simulation technology, all new audio, updated maps, enhanced effects and more. More information about Day of Defeat: Source will be released in the coming weeks.