In Friday Night Funkin Inverted, as the title would suggest, everything is turned upside-down, and characters might have different looks and sounds, many of them being mixed up with one another, but you have a whole 3 weeks of original songs to enjoy in this new world:
From the main menu, you will choose between playing in weeks in the story mode or playing with individual songs in the free play mode, but in either case, you need to reach the end of the songs by playing their notes according to the charts to win.
How? Well, simply put, when you see arrow symbols float and match above BF, that is when you press the identical arrow keys to hit your notes. Don't miss doing it too many times in a row, or you lose and have to start from scratch again. Enjoy!