Play a game: QUESTIONAUT

Questionaut is another educational adventure game from BBC and created by Amanita Design, who is the creator of the very popular Samorost games. In this game, you try to travel through strange worlds and test your knowledge of English, Maths and Science on this magical mission to recover your friend’s hat.You move through eight levels. You have to first click items or characters within the level to cause a chain of events that will get one of the characters within the level to start asking you questions. With each correct answer, you get more hot air in your balloon which, when full, takes you up to the next level. With each incorrect answer, you lose some of the hot air. Good luck and have fun!
You can find information about it here!!