Realization of Online Games

What would happen if one day the earth merged with an online game? In 2094, an epoch-making online game, "Second World", was released. However, on the second day of internal testing, the entire game suddenly disappeared out of thin air, including all information about the game. Only people's memories can prove that this game existed. A month later, when people were intensively re-developing this game, it arrived in a way that no one could have imagined!