We have had years of experience with Knex toys, typically they are incredibly thought out and lots of fun. Knex Electornic Arcade is a disaster. Once again the instructions are great and as always the pieces are a bit difficult to snap together, but the finnished product is awful. The pinball game is pitiful. the center wheel bearly spins due to poor design. The flippers are designed with a flaw that catches the ball which make you have to move it back on the board to continue play. The internal serial jacks are suspect as well, making for intermittent electrical connections. Knex is a great toy, just not this one.