With the first experience on the AR (Augmented Reality) app of the Solar System Book, I let Kin download the AR of the iRobot Book on his own.
Below is the snapshot of the AR app download instruction which is embedded in the book.
The iRobot book equipped with 4 AR. One of those which Kin likes the most is the Robot Battling.
The following books were chosen for this topic.
1. Facts about Robots

A robot fact book with AR (Augmented Reality). [RM39.90] {Popular}

A robot fact book. [RM9.90] {Popular Book Fair}
3. Art & Craft books of Robots

A paper making craft with 12 robots. [RM6] {School Bookfair}