Interesting reading, but be careful. The problem you can have in this situation is there is 3 sides to this story. The right way, the wrong way, and the legal way. The legal way is usually the same as the wrong way, but you get screwed. I agree with everyone here, you bought them and they are yours. If the kids have your info and they take this step daughter to court and she doesn't have proper documents saying she had the rights to sell his items, depending on your states laws, how the judge feels on this subject, is the judge a friend of a friend of one of the kids, and so on, you could actually need to give the games back and not even get your money back. You will then need to file suit against the person you paid to recoup your losses.

I seen a similar situation with an estate sale/auction. Just before the auction started a bailiff showed up with one of the deceased kids and put tags on everything he wanted. Ended up winning everything in court about a month later.

It was 2 bailiffs. They looked kind of young. Guys name was Bernie. Didnt say anything. Just pointed and moved like he was on strings like puppet or something.