There are three versions of this activity.
As a writing activity I prefer to use the poster and worksheet and not the powerpoint games.
The students pick pictures from the poster and write two sentences. For example 'It is a bear. They are penguins' and show their sentences to a teacher before continuing to a second picture. See how many sentences they can complete as groups, pairs or individuals.
The regular powerpoint version works okay with small classes.
The one with points works as a speaking activity. They say their two sentences about the picture and then pick a letter. If they pick the letter that reveals a demon then their team loses are all their points. Or they can play janken and have a chance of keeping their points.