OK - I've got a good one here. First - it's free. Second - apparently you can trade it in for a $5 credit for another game when you are done with it. Third - its actually a really fun game. Details through the link: Disciples II gold for free.
I normally wouldn't do this, but I want to give this a bump. EVERYONE THAT READS THIS POST (end caps) should get this game for free. Even if you don't want the game. You apparently get a $5 credit for spending nothing. That means if a great deal comes up on green man gaming (and there have been a few), you get $5 off for the incredibly huge effort of creating an account on their site or logging in, clicking buy, and then benefiting later. All that said, its a really great game. BUT - I recommend everyone pick it up for nothing for the future discount.