Blooket is easy to set up. Go to www.blooket.com

Sign up with a Google account or any email to start. Basic accounts are free. 

As a teacher, you can create your own question sets or browse countess pre-made question sets to play.

Select a game mode and host a game in your class. Can choose how long students have to play the game or the achievement to be reached. You can also assign a game for an assignment to be completed asynchronously. 

To play, students use their device and go to www.play.blooket.com to join a live game with a game ID.