pelletboy

Are Guilty Gear and Blazblue set in the same universe?

Blazblue has time travel, multiple dimensions, and multiple time lines. Side stories and spinoffs are likely not part of the main time line in the main dimension but could be canon. Are "Blazblue x Guilty Gear" and "Cross Tag Battle" sidestory canon? which among the spinoffs are canon? Are the card games and comics canon? Which among the stories are tournament-based and which is not?