Marble Run Designer is a free Android game developed by Darya Tcareva. The game falls under the simulation category and allows you to construct your own ball tracks. You can arrange races and set the finish line to see which ball comes first. Additionally, you can name your balls and share your designs with other players in the workshop. The game also allows you to rate other players' tracks.

The game's user interface is straightforward and easy to navigate, making it accessible for all ages. The graphics are well-designed and visually appealing, enhancing the overall gaming experience. With a wide range of customization options, players can create unique and challenging tracks that will keep them entertained for hours. Overall, Marble Run Designer is a fun and engaging game that is perfect for anyone who loves to design and construct their own tracks.