Auto Save Binary File tool allows developers to save and load the positions of multiple game objects in Unity as a binary file. This provides an efficient way of storing the positions of objects, even after closing the editor, and allows developers to easily create checkpoints in a game or save and load scene layouts. Binary files take up less space and can be read faster than text files, making the tool a useful addition to any developer's toolkit. The tool is easy to use and can help improve workflow, saving developers time and effort in their game development process.