It covers the vowel diagraphs. I used it as an alternative to flashing and quick writing the sound.
Children can either say or write the vowel diagraph when they land on it. If they don't get it right then I make them move back to the picture they were on before. Usually play this game in pairs and they have really enjoyed it.
There are 4 boards. I have used haunted for the au sound but each board has a different picture.