A distortion in the Dragon Ball timeline caused the past, present, and future to merge together. Future Trunks discovers this mix up and travels back in time to fix things in Dragon Ball Z: Dokkan Battle.
Bandai Namco developed this smartphone title which mixes a board game where you move around the Dragon Ball and collect items including Dragon Balls. You can fight other characters with a speedy battle system where you tap ki and use signature moves from the anime series.
Dragon Ball Z: Dokkan Battle is available now for Android and an iOS version is planned to come out in the future.