Duolingo for all knowledge - the BrainQraft application has caught on in the web, which turns learning into a video game. Upload a PDF, summary or YouTube video, and the AI turns the material into a game course with short lessons, tests and mini-games. You can study anything from history and math to law. Experience, series, and rewards are given for completing missions, and the material is broken into chapters so you can learn a little each day. BrainQraft is available on iOS and Android. Learn for free - here @exploitex.