picassohead – Create a head in the style of the Spanish artist Pablo Picasso!
Space Place – games from NASA
Traveler IQ Challenge – How well do you know your world?
Free Rice – Get the answers right and help the United Nations Food Programme
Suduko – A math challenge
Virtual Pilot – 8 seconds to land your plane in the correct city
Shmoop Flashcards – Test your knowledge of any subject!