Take a photo of a barcode or cover
It’s easy to understand for any readers. Anyone can read it. The pictures have hidden letters that in in the end come together as a secret message. I liked it, it kept me wanting to know what would happen next. Kaz age 10
5 star - Perfect
4 star - i would recommend
3 star - good
2 star - struggled to complete
1 star - could not finish
4 star - i would recommend
3 star - good
2 star - struggled to complete
1 star - could not finish