Help the green and blue brothers steal all the emeralds from the worlds most sheltered bank.Try not to touch guard bugs and thorns and teleport between portals.Finish 4 different tiers and become the richest brothers in the world Portal Adventures, 2 Player Game, Adventure Game, 2D Action, Arcade Game, Emerald Stealing, World Exploration, Teleportation Game, Puzzle Game, Kids Game, Boys Game, Best Games, Family Game, Mobile Game, 2D Adventure, Green and Blue Brothers, Strategy Game, Action Adventure, Treasure Hunt, Emerald Collection