There is no language focus for this game, that part is up to you to decide.
It works as a reward for the correct production of any language you are studying in class.
Simply have the student produce the language and, if they do so correctly, they can come up and use the mouse (or their finger if it's on an interactive whiteboard) to press the control panel at the bottom of the screen. Each correct answer moves Alan closer to his home planet and his pet pink "thing" Bob!
It's a bit of fun, hopefully your students will appreciate it as well!
P.S. Make sure you have the speakers turned on, as it includes some sounds!