This game system is very intuitive, and easily comprehended by all ages. The questions in the trivia games may seem difficult at first, but that is true for ALL ages. Replayability may be an issue if you do consecutive replays, as each game is a set series of questions, rather than randomly chosen. The open /close button does function a little slow, but not extremely so. Teens would not stop playing when it is time to leave -- that in itself is good news for an EDUCATIONAL game!