In what appears to be the start of a new initiative by Microsoft to publish old PC titles digitally, Age of Empires III: Complete Collection has turned up on Steam.

The asking price for this RTS oldie is $19.99 until January 9, representing a 50% discount. Otherwise, it’s $40. Fairly steep even when you factor in the deal, considering how long ago this was released.

Still, it’s nice to see Microsoft jumping on the Steam bandwagon. This, combined with the arrival of Fable 3, certainly bodes well for Steam availability of Alan Wake PC, which is due out in the coming months.

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