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Math Hopper Think fast to build up the Fever-O-Meter
Mapme Medium for maps
Unsplash 4.0 Free (do whatever you want) high-res photos
ZCast Live interactive podcasting with your Twitter followers
Simply Piano Fast and fun way to learn piano
Contranoid The chaotic two-player telephone game from 1897!
Math Swipe Master - division This is a unique educational and fun math game!
Compfight A Flickr photo search engine
Oh Hi A logic game
Unsplash 10 Public Domain Photos Every 10 Days