Wikipedia
Kahoot!
Kahoot! is a free game-based learning platform, as educational technology. Launched in August 2013 from Norway, Kahoot! is now played by over 50 million people in 180 countries. Designed to be accessible to classrooms and other learning environments worldwide, Kahoot!’s learning games (“kahoots”) can be created by anyone, for any subject and for learners of any age. As Kahoot! may be played using any device, desktop or laptop with a web browser, it is rapidly gaining traction in classes with " bring your own device" policies.