Puyo Puyo Tetris‘s Swap mode is really good! It’s 25 seconds of Tetris, then 25 seconds of Puyo Puyo, back and forth until someone loses one of the games. It’s like chessboxing. At PAX South 2017, I put my Tetris stacking up against Puyo master heavenchai in this intense final match. Watch for the twists!
Edit: Here’s another upload that used the replays I saved during the second and third games. I forgot to save the first game’s replay; sorry!
Source: nuclearlemons and lhadatt, both standing behind me during this match