Brain Test 2 Smith and Joe Vs Professor Bigbrain Level 21 Answer

Our editorial team delivers the guide for "Brain Test 2 Smith and Joe Vs Professor Bigbrain: Level 21, Bigbrain is draining people's brain powers. Stop him!"

By Emir Lajev /
Question
Bigbrain is draining people's brain powers. Stop him!
Hints
Hint 1:
You need the help of your zombie friends.
Step 1
Answer
Open the manhole then tap on the hole 3 times to have 3 zombies, put the zombies on the pink lines.