Regarding the game:
The key game has a cemetery and blue lights (lanterns) hanging on the doors (as pointed out by Pumpkin on the Our Mutual Friend thread. So this game ties in with Hint #4. So then this part of the game could be tied in with one house. The name on the tombstone, Elizabeth Hawthorn, would seem to be tied into this house rather than as an overall icon. Unless, of course, this is the icon house.
With the tv game, the first part is the phone. On the notepad it says "re: job offer You have two calls waiting...Line 2 is the Taxidermy Company. Line 10 is WKNB, the telivision station." This game is obviously alluding to Hint #3, thus representing another house (Disaster).
Where it comes together is under 'The House' tab. Under the house of cards there are 8 tokens. When you beat each game, half of one token becomes filled in. It seems like we will be getting more games as time goes on, one representing each house.