WallStack is a modular wall system with applications in office spaces, retail and many more. The system is easy to construct, just like a constructor, and compact enough to fit in a trunk. It works on a modular basis, allowing walls to be folded and stacked without any tools or equipment. The surface of the modules is smooth and without visible structural parts, which gives the freedom to play with different colors and styles. Various accessories can also be added depending on the specific need and application. Foldable. Stackable. No tools needed.