Since all PIXIO sets have identical cubes, you can build whatever you want from any of those sets. But many sets have a general theme, and they have according number of blocks of different colors and proposed crafts. This, for example, is one of the Animals set – with lots of orange blocks and booklet offering to build orange animals.
![PIXIO Orange Animals PIXIO Orange Animals](https://buildkitpedia.com/wp-content/uploads/2023/08/pixio-orange-885x1024.jpg)