How fast are you? Ready to find out? Test your sense of sight, hearing, and touch in a lightning fast game to see who has the quickest reflexes in town. Go up against the computer in a series of challenges or play against a group of friends. Every round is different since you won’t know what sense test is coming next. So if you need a great game to pass the time, settle a bet, or just see who is the best ThumbUp is for you!