Students get a set of small vocabulary cards. They also get one ohajiki (a counter/game piece) each. Each student puts their ohajiki on one of the cards. The teacher sets a random time on the timer (between around 30 seconds and 2 minutes), but turns the timer away from the students so they can’t see how long the round will be. All students start with 5 points.

The teacher starts the timer, and calls random vocabulary. The students repeat them. When the timer stops, any student who has an ohajiki on the card that matches the last vocabulary called loses one point. The teacher then sets a new random time and the students pick a new vocabulary card for the next round.