New Flashcard Game – Tower Defense!

Today we added a new Tower Defense game on Braineos! The objective is to defend the eggs of a golden dragon from some evil aliens. In order to build towers, you must earn cash … and to earn cash you need to answer questions from your flashcards. It’s harder than it sounds, and harder still if you’re trying to learn something difficult.

Tower Defense Screenshot

Blast those aliens!

This is also the first Premium game on Our new Premium membership is very affordable, at only $5 for a whole year. So sign up now and start learning!

Got an idea for a new game? Click the feedback tab on and let us know.