This project explains how 3D works in scratch . Basically you need a new dimesion called Z which is basically depth more positive it becomes more smaller it becomes , more negative it becomes it becomes more bigger it becomes. 3D is complex when using it to make games but simple just to get an engine running on your PC. Free to put this sprite in your backpack. To become a true master in 3D you may look at @MathMathMath 's or @voxelbear's tutorial on how to make 3D actually work in scratch. As I said this is just an engine and not an actual 3D game. So you would have to create the game yourself. As mentioned, 3D has a new dimesion called Z which is basically depth. This engine will only work for games which use projecting 3D and not for raycasting or raylisting so it may be hard but try. If you're a true beginner to 3D first try raycasting.
Thanks to @voxelbear for his tutorial . For more guide, please check out his tutorial to make this.
