A lot of things in Sonic Forces seem out of level entry fanfiction, and I actually mean that in a good way, because it seems they are having a blast with it and just going all the way:
>customizable OC main character>Eggman taking over the world and being all serious about it, post-apocalyptic>Sonic and friends starting a resistance, with an army, in a war against Eggman>A lot of past enemies teaming up>Fucking Infinite>Fucking Infinite's theme holy shit: https://www.youtube.com/watch?v=XKjOJuPjiu4 