Baamboozle has a free plan and paid plans.

If you (assuming you're a teacher) have access to a Baamboozle+ account, you can generate a unique 6-digit Class PIN each time you share a game with your students.

Baamboozle - baamboozle.com Baamboozle is a quick and easy-to-use tool for playing and creating games. It doesn't require registration to play. Choose the "Games" link to go to all games saved on Baamboozle. Scroll through to view games, or search for a term. Divide the group into two teams and begin play.

Is it better to live in the city or the countryside? Should junk food be banned in schools? Is technology making people more disconnected from each other? Should the voting age be lowered or raised?