Every game, especially FNF Mod, has its own one-of-a-kind story to tell. When you choose Tale Mode, you will be able to see the whole tale of the game, as well as all of the content and tasks available to you. Free Play Mode should be selected if you want to achieve victory as rapidly as possible while still being able to listen to the music of your choosing.

After choosing the game style in which you want to take part, you will be able to change the level of challenge presented by the conflict through the options. It can be completed with an Easy, Medium, or Hard level of difficulty. When learning how to play the game, beginners should start with the most basic degree of difficulty and work their way up to the more difficult ones.
More info here: https://fnfmod.co