The number of players that can join depends on how you host your game and how you use Kahoot!.
Live games work great for a group of players in the same room, with one person being the game host presenting questions. Questions display on the host’s screen, which should be large enough to be viewable to all players.
Challenges are for when a teacher or trainer wants to quiz a group of players that are not in the same room, for example, for homework or virtual training. Questions and answer options appear on players’ mobile devices. Our iOS/Android app is required.
How you use Kahoot!
For live game and challenge player limits check out the article below that matches your use case:
Large games or important events
If you’re planning to host an important game session, a smart move would be to test for possible connectivity issues at your venue at least a few days before your event. This will give you time to work with your IT team to fix any issues discovered.