This is a ROM hack for Somari the Adventurer with an unofficial update version of Sonic the Hedgehog (NES) - Improvement Plus Tracks made by Jabu (November 20th, 2016) and Ti (December 1st, 2016). I'm surprised that they include Super Sonic. They also added Blue Spheres from Sonic 3 & Knuckles (for players who got all Chaos Emeralds) and that's impressive. For some reason, if you grab all Super Emeralds, it doesn't change the Super Form other than it changes Sonic 2 Super Mode OST to S3&K invincibility OST as a reference to 1994, Sonic 3 & Knuckles.
Download:
https://www.romhacking.net/hacks/5026/
https://cdromance.org/nes-roms/somari-unlicensed/ (you'll need this)
https://www.marcrobledo.com/RomPatcher.js/ (patch it)