Brain Master IQ Challenge is a free online puzzle game with hundreds of free IQ challenges that will help improve your IQ. It's addictive with a series of brain test levels and IQ challenges. Think carefully to pass all the brain quests and become the person with the highest IQ. Let's started and enjoy the latest brain games today! IQ challenge, brain game, puzzle game, improve IQ, cognitive skills, brain test, online puzzle, mental workout, brain training, logic puzzles, problem solving, memory game, HTML5, Android, kids, fun, brain games, number, online