Akira Toriyama’s Dragon Ball is subject to many important milestones and Dragon Ball Z: Battle of Gods was a pivotal turning point for the franchise. Originally released in 2013, Battle of Gods was the first Dragon Ball movie in over a decade and the precursor for the franchise’s latest installment, Dragon Ball Super. Dragon Ball would not be where it is today without the impressive foundation that Battle of Gods lays out for the franchise’s future.
Source：https://www.cbr.com/dbz-battle-of-gods-extended-edition-additions-differences/
