I love puzzles like this and enojoy sharing them with my children.
Thinkfun puzzles are always brilliant quality and so handy to store with their little bags and well-designed format.
However, I'm ashamed to say I found this one really hard to do. I'm an adult. I'm not sure if the average 8 year old would persevere long enough to solve each one. I had to look at the clues on the back, and even then it wasn't that simple.
I am usually quite good at visual-spatial tasks and problem-solving, but this has nearly got me stumped!