Brain Defense

Name: Brain Defense
Availability: InStock
Author: Bat Cat

Bat Cat

Everyone

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Everyone

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About this game

Brain Defense turns your flashcards into a tower defense game.

Pick a deck, then answer questions between waves to earn gold. Spend it on towers and upgrades, and hold off each wave of enemies. The better you know your material, the further you get.

Play with your own decks, or decks you can discover and study
Questions come from the deck's multiple-choice cards
Build and upgrade towers, then watch the wave play out
Your best wave is kept on your device for each deck
Sound effects, with a mute option
Sign in with Google to get your decks. Brain Defense uses the same account as Braineos (braineos.com).

Answer your own flashcard questions to build towers and survive enemy waves.

Updated on

Oct 27, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.

No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info and App activity
Data is encrypted in transit
You can request that data be deleted