The Wolf Among Us season pass, previously priced at £18.99, is now £11.39 ($14.99) and gives owners access to the complete first season. Episode three, Crooked Mile, is released today.
Spelunky is currently available for £4.07 ($5.09). Both offers end on April 11.
Announced in March, The Wolf Among Us is based on DC Comics' Fables universe. Taking place prior to Bill Willingham's award-winning series, it's set in a universe where the likes of Snow White and Little Boy Blue are forced out of their worlds and into ours.
It casts players as Bigby Wolf (Big Bad Wolf), the sheriff of a hidden community in New York City. Bigby is charged with keeping order in a society where magical characters in exile from the land of fairy tales lead semi-normal lives in the real, mundane world.
Valve said in January that Steam has more than 75 million active users, up ten million since its last report in October 2013.