Brain Train Challenge brings you 28 simple but addictive brain training mini-games to play against the clock. Improve your logic, observation, reactions and memory with a fast-paced series of word, number and spatial awareness challenges. How high can you push your personal best while you play to win a full set of gold medals and collect all the awards? Brain Train Challenge is ad-supported and every level is fully playable for free. You also have the option to upgrade and play without adverts or purchase additional coins from within the app.