Sonic Forces - side characters won't be playable, info on story and side-scrolling gameplay

- side-characters like Knuckles, Amy, and some members of the Chaotix communicate with Sonic via radio
- these characters are present in the game, but they are not playable
- gameplay is focused on Modern Sonic, Classic Sonic, and a third style
- in the storyline, Eggman has already conquered the world
- gameplay also has a side-perspective to deliver the modern gameplay with a side-scrolling twist