Originally Posted by RampantCoyote 
And I don't know this for sure (I don't know if Steven Peeler knows, either), but I suspect that the big reason Din's Curse is not on Steam right now is because Depths of Peril wasn't a big performer on Steam many years ago.
I don't know what kind of numbers Valve likes to see but if we got DC on Steam and it sold the same number of copies as DoP did, I would be very happy. Of course I think DC would outsell DoP on Steam.