Therefore, I suggest:
If a player hasn't finished 1 game, threaten them with one finger,
If a player hasn't finished 2 games, threaten them with two fingers,
...
If a player hasn't finished 5 games, threaten them (attention!) with one fist!
P.S. I haven't figured out what to do next, I need collective intelligence... Off the top of my head - then with two fists,..., when 5 fists have accumulated, I suggest shaking one head disapprovingly, and so on. In general, there is room for imagination, there are many organs...
