The Father - SPOILER
If the father completed the game, then why weren't he and his family rich?
Maybe I missed something when he explained it. Did he say he couldn't handle it as in "handle all the money/depression of murdering the mother" and ended up spending his millions? The dad completed the final task of killing a relative (his wife) so why didn't he get any money from it.
I remember him saying the "game had changed" but thought he just meant the contestants were clowns, like his sons.