Today's update introduced Relics, which are items, of which one can drop per ascension after level 99.
I noticed on the overview page, that there is now also something called "Forge Cores". What are they, how do I get them and what do I do with them?
Best Answer
Currently, they do nothing. In the future they will be used to upgrade relics. You get them by salvaging relics.
http://clickerheroes.wikia.com/wiki/Relics