This is a game for small groups
It works like the battleship game - (for the ones who don't know what the battleship game is, see example) give each group a card and let them work out what there words are.
A nice way to repeat numbers and letters, I used words they just learned in the past 4 lessons.
You can change the words to your liking. Print out on thick paper like a card.
Example: Group one: do you have a letter in C 7 ?
Group two: yes it's a T
So they write on there card in field C7 a T
Then it's the next groups turn....................... and so on until they have all the words. It takes a long time so you could do it in two or even three sessions (lessons)
Hope you like it.