Brainy walks through the village but has not much to do; he just gives advice and warnings when necessary. For example when there are too many Smurfs living in the village but to few gardens to grow food for all of them, or when the harvest has wilted Brainy gives a warning/information.
Brainy Smurf’s Hut
Brainy Smurf has finally gotten his own hut, but it is only available on the island. If the island has been reached with the ship, Brainy Smurf’s Hut can be found in the first shop (with the mushroom icon) for 3000 Coins.
The minimum level to build his house is level 23 and it will build within 24 hours.