By default, the puzzle pieces are scattered randomly on the page. When you hover over the image, the puzzle automatically assembles itself.
More information
https://www.wysiwygwebbuilder.com/puzzlepieces.html
Requirement:
WYSIWYG Web Builder 20
You can also download the new extension via the Extension Manager: Tools -> Extension Manager -> Online Gallery -> Galleries
This (free) extension is from my private collection. It is provided "AS IS".
Please read the included documentation for help.