It’s your party. Hit Left and Right as the arrows reach the line — arrow keys, A / D, or the buttons.
It starts slow and gets faster every verse. There’s no finish line: the score is how long you last.
Hits refill ENERGY and misses drain it — at zero the party’s over. They also build HYPE, and filling it doubles your score while the room goes wild.
Every 4 in a row the whole crowd throws their arms up.