i figured out what this is about
It was pretty good graphics and nice music but at one poiont there was no sound where there should have been.
*****SPOILER, DO NOT READ ON IF YOU DONT WANT TO KNOW WHAT HAPPENS*****
I figured out what happens. In hell theres a bunch of imprisoned people and they need that key to get them out. the key gets stolen and stuff and it goes through time with different people. a bunch of copied get made of it in the industrial revolution. Then it sets all the kids free from hades i think.