Their failure was not just due to their own inadequacy, but due to a fatal flaw in their game. For this session contained a glitch.

It caused this session to not be the one in which these trolls were born. The glitch is a result of Lord English being born into the universe.

Knowing their defeat was inevitable, the 12 heroes seek the help of the Denizen Echidna. She gave them a choice. Either accept defeat, or to have another chance.

They chose to have a second chance. so they Scratched their session and reset the universe. In this new universe they would switch places with their ancestors. There would also be a First Guardian to guide the course of history to make sure the new heroes would be prepared for the game.