In the demonstration, make sure to show that when you have been ‘infected’ once, you continue to talk with friends. The game does not end when you have been ‘infected’!
Also demonstrate what happens if you meet someone who likes the same food as you to avoid confusion (and unnecessary janken bouts) in game.
Remember to do a good/bad demonstration. Students must produce the English before playing janken (as with most janken games, students can bypass the English entirely) and encourage peer support. Remind them it’s not a race because sometimes students can forget which word they must use in that moment as it changes often throughout the game.
Before the game, you can write how many students are in each group under the relevant flashcard. At the end of the game, you can count and write the new number underneath. This provides students a visual aid to see what team won/lost and by what margin.
You can play this game in rounds very easily.