Explore 4D world as viewed by the eyes of imaginary 4D creature that uses volumetric (3D) space for visual sensing instead of planar (2D) space like we do.A brand new 4D rendering engine was created for a casual puzzle game yet to be released. Based on that engine, this exploration sandbox was created to observe 4D convex polychorons (which are 4D geometrical shapes made out of 3D shapes).Currently implemented features are:Pick any of 6 known regular polychorons to explore - 5-cell, 8-cell, 16-cell, 24-cell, 120-cell and