Joystick Mouse Emulator for UIs

Add this script to your root UI object (be it the main menu, or an in-game menu) and any UI instantly has joystick support sufficient for passing the Steam Build review; and as a bonus it's actually pretty pleasant to use; you'll quickly find yourself no longer reaching for the mouse to operate your menus. It would be suitable for a 2D or 3D platformer or even a sandbox game like Minecraft; but if your game is intended to be used almost entirely by mouse (eg Starcraft) even a very good mouse emulator like this will get old.