It's down to four contestants who must recall questions about a vest, animals and fruit.
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Players go home via the Brain Drain. Brain Drain's goo and more details are revealed.
What's the number on the speeding car? And what about that Philly cheesesteak?
Meet the six brainiacs. Five will go down the Brain Drain.
Can you figure out this 20 point puzzle? Which number is the largest?
Meet some of the 100 brains who work on BrainSurge. See what happens on Game Day!
Host Jeff is chased by dinosaurs and contestant Matt makes an accusation.
Can you solve the two puzzles? Remember the swimmer and then the penguin.
Feeling smart? What's the number on the side of the car and which host ate the apple?
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