>>48750416You group Puyos (The slime things) into 4 matching colors to pop them and send trash to the other guy. The game plan is that you're supposed to set up chains of Puyos to absolutely flood the other guy with but no one in Hololive not named Marine knows how to deliberately make a chain longer than 2 so rounds always end up triggering the sudden death mode that ramps up the amount of trash sent by popping puyos.
