Life Is Beautiful has a man and his son in the camps, and he sets it all up as a game so his son won't be scared, like hiding and being quiet gets more points, but not doing work gets you less. He makes excuses like childrens' numbers in the camp dwindling because 'oh they're hiding, because they want to beat your score!' and they can't leave because 'they almost have enough points to win!' and the guards are nasty because 'they're jealous and want the prize'. His son sees him as he's being taken away for execution, so he starts dancing/goofing off as he's led out of view to keep the illusion up.
So aside from 'pretend like everything's fine to little kids in a certain death situation', they don't really have much in common.