Wow! So many guesses. And evidently I severely underestimated the gaming knowhow of my fellow GOGers, as the correct answer has already been guessed. (And quite early as well!). That or I really, really suck at cryptic clues. :P
However, I don't want that to make this whole thing anti-climatic, so I'm going to tack on another facet to the contest and amend my original post.
Now, I'm still giving away Postal 1 and Hocus Pocus, but now I'm going to offer two more games from this weekend's sale! Everyone who has already posted is automatically entered into this additional random drawing, and anyone who wants to join in merely has to guess what two games I myself will be purchasing from this sale to add to my collection.
Tomorrow night, after I get home from work around 6PM EST, I'll randomly select the other winners. One will get Postal, one will get Hocus Pocus, and two will get to select a game from the sale.
Thanks everyone for entering! And there's still time to toss your hat in the ring.