Big Bang is a mode that appears in Puyo Puyo Tetris and Puyo Puyo Chronicle.
All of the players power absorbed in a black hole and then explode.
Players have the option of picking either Puyo Puyo or Tetris. When the match starts, every player is either in a Fever state if playing Puyo Puyo or Lucky Attack if playing Tetris. Both Puyo Puyo and Tetris players are given preset boards and the objective is to clear as many boards as possible. Puyo Puyo gives preset boards that act like the ones from Fever, except they are organized in a way to make getting All Clear easier. Tetris players are also given preset boards, however their boards involves using a specific type of Tetrimino in order to clear out the board ina specific way, with higher levels adding more Tetrimino types into the mix. Regardless, if the player completes the board correctly the next chain length will slightly increase, but if the player clears the board incorrectly the chain length decreases.
At the top center of the screen is a timer that counts down by 60 seconds, and during this time every player is tasked with creating as many chains as possible. Once the timer is over, both players stop playing Fever/Lucky Attack, but pausing until a player makes their last move. All the power from chains then gets absorbed in a black hole, and then explodes with the titular Big Bang. The game then calculates the power of every player, and whoever has the strongest power will inflict damage onto the other players. Damaged players will have their health bar depleted, and their board will have a broken glass effect that gets worse with more damage. Once the health of an opponent is completely drained, their board shatters and they are knocked out. The game repeats these rounds until the last player stands.
Cosmetically during the Big Bang, characters will attack using their final chain animation, for example Arle's Bayoen.
The same rules apply, however nothing related to Tetris is carried over. In addition characters now use their 3rd in Fever, 5th in Tsu chain animation during Big Bang, for example Arle's Brain Dumbed.
Big Bang is the only mode introduced in Puyo Puyo Tetris to appear in a future game.