Crazy shoppers Adapted from http://iteslj.org/c/games.html
Equipment: From shopping catalogs cut out a large number of items/products (for selling). Copies of play yen money.
How to play: Divide the class into two groups: てんいん (Tenin) and おきゃくさん (Okyakusan).  The Tenin set up their shops by putting the cut out magazine products on tables around the outside of the room.  The Okyakusan are given a set amount of Yen each.  Explain that they are going shopping in a ひゃくえんや (Hyakuenya) and that all products are only one hundred yen.  Then, the teacher says 「かいものをしましょう！」 ‘Kaimono o shimashou’ and the students start shopping.  The aim of the game is to buy as many products as possible.  Periodically, the teacher says とまれ (tomare), and calls out the name of one of the products. Any student with that product must put ALL their products into a basket at the front of the room and start shopping from scratch.  The student with the most products at the end wins.  EXTRA: Students can switch roles.  Or, Tenin’s can set the prices of each product.  Or Okyakusan have the option of negotiating the price. There are two winners in this version Okyakusan who buys the most products and the Tenin who makes the most money.

How much match
Equipment: a worksheet for each student, scissors (or pre cut numbers)
How to play: Students cut out the numbers.  
In pairs, students place the numbers on the question marks on the worksheet and then ask おいくらですか to their partner。Their partner then reads the price in Japanese. OR The Tt can say a price in Japanese and then the Ss must put the price onto the question marks accordingly.

The Price is Right
Equipment: various products/shopping items or pictures of items, 4 mini whiteboards (these can be made from laminated A4 paper), 4 whiteboard pens, price tags
How to play: Divide the class into three teams.  Select a representative from each team to come to the front of the class.  Sit each student in a chair facing the rest of the class.  Give each student a mini whiteboard and marker.  Show each student a product.  Tell them to guess the price of the product.  (To make it easier the Tt could suggest a price between two prices ie. ひゃく円からせん円までです。）Give the students 30 seconds to write down their price on their mini whiteboard.  When the time is up, ask each student 「おいくらですか。」Each student then turns their mini-white board around saying their price aloud in Japanese.  If any student guesses the price correctly they then get 2 points for their team.  If the price doesn't match then the Tt shows the price to the students.  The students then need to put up their hand if they know how to say the price in Japanese.  The student who puts up their hand the fastest gets to read the price first.  If the price is read correctly then they get 1 point for their team.  Swap students at the front with students in their team.  (Use a variety of products and prices.) The team with the most points at the end wins.