Great game, visuals and audio! The only small problem I have is with the audio sliders in the menu: the upper half doesn't change the volume much. Make sure to use the correct scaling. If you are using Unity's audio mixers, then their unit is already dB, so they don't need any scaling. It seems to be a common misconception that you need to use a logarithm. But I think it is a good sign that the only problem I have has to do with the options menu.