The idea is that we must collect different pictures by folding the parts of the sheet that show fragments of this picture. In general, superimpose on top of each other so that the picture is formed. In the case of an incorrect sequence, you have to clean everything up and start over.
The pieces of paper are already drawn, you just need to connect them in the correct sequence. Sometimes the picture can be superimposed on each other in the wrong order and you have to re-fold it. In principle, nothing complicated, but Paper Fold is very addictive.