This game UI was drawn in photoshop and inspired by windows 95 design and the vaporwave style.

The game contour is made so it gives the impression of an older application that was launch. For the main menu, the goal was to keep it simple. There is an animation like shown below in the title, this was done with the animator in Unity. As for the buttons, they are design to look like floppy disks to make it nostalgic.