When you press Start, a "failien" will start coming towards you. To stay alive, you must correctly answer the question posed to you before the failien reaches you!
You'll see the question prompt at the top of the screen, and 3 answers to choose from below. Choose the right one and the failien will be shot! Choose the wrong one and its shield will protect it.
If you make it to the end of the level, you'll see your stats, and can continue to the next level. Keep playing to get on the leaderboard!