If you scroll over the castles in the bottom right hand corner, you will notice one with a Greek Flag, one with an English flag, one with a French Flag and one with a Chinese Flag. These flags represent the language used in each game. When you click on one of the castles another castle appears.
You can also click on the seasons on the black board and click on the insects flying around.
This is the same for each castle only in the different languages.
This is a great activity for students to explore. You could even set a type of scavenger hunt and see if the students can find the items in the game.