Story Mode - Pretty self explanatory. Play the story of NB Reincarnation.

Start- Begins the game

Level Select- only unlocked upon getting all endings

Items- Where cosmetics from the shop can be equipped

Extras- Welcome to Nicole's Database! It gives more information about characters and locations

Characters- Learn the history of the characters. Sally,Cream and the chaotix will be added.Not all bios will be unlocked , the more lore you find however the more character bios will be added throughout the game

Locations- The Places of Sonic's past and New Locations will be added as you play the game.

Shop- Unlocking stuff after Completing endings.

Solo Endings unlock "Hallucinations" which are characters that follow you around during gameplay

Duo Endings unlock some bios about characters and forms

Trio Ending unlocks bios about Super and Hyper Sonic as well as giving Tails and Knuckles the ability to go Super which gives you 50 Rings that will drain but also make you invincible.

Ok Long Explanation over.

Till Next Time, Bye