
Valve's digital Steam service is going strong with 30 million active accounts, and now the developer has further boosted its offerings by adding free-to-play titles. Steam is kicking off its support of the free-to-play model with five titles (which will include in-game Steam exclusives): Spiral Knights, Forsaken Worlds, Champions Online: Free for All, Global Agenda: Free Agent, and Alliance of Valliant Arms. Valve's support of free-to-play shows just how widely accepted it's become.
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