Was looking for to buy Wolf Among Us, and added several users on steamtrades, talked to the one that got first online:

Here is his conditions:

• I buy game on demand on telltale shop in their shit

• You give keys first

• The game is not for steam

LEL SINCE WHEN BUYING A GAME IN TELLTALE'S SHOP MAKES IT NOT COMPATIBLE WITH STEAM

And the buying options in telltale's site are 'XBOX' 'PS3' STEAM' 'APP'

So i asked 'for what plataform did you bought WAU if it is not compatible with steam, ps3, xbox or app?'
' there is a 5 choice of plataform to buy'

the fifth choise was buying a physical copy xD

jk, its not improved scam, but it is hilarious

P.S.: this was a real scam attempt