The gooey effect is a circular or rectangular or linear effect to represent complex data visualizations more simply or efficiently for a better understanding of data through the movement of elements. This visualization is to represent data that needs to drill down the grouped items. We have a visualization chart showcasing the 150 most populated cities in the world for your reference. The Gooey effect always starts from the center. Here at the center, we have a circle flying out to 150 endpoints to refer to the highly populated cities across the globe and again grouped by country. Note: Every circle has its own size and shape to indicate its population density. And then all these 150 endpoints, together slowly forced out and grouped according to their countries, and every group together merges into a blob that represents a country.