Kahoot.it - a free game-based learning platform

Kahoot is a free student-response tool for administering quizzes, facilitating discussions, or collecting survey data. It is a game-based classroom response system played by the whole class in real time.
Questions are projected on a shared screen, while an unlimited number of players answer the questions with their smartphone, tablet or computer; creating a social, fun and game-like environment. Kahoot allows for the design of multiple-choice quizzes as well as polls and surveys.