SEGA Superstars Multiverse

SEGA Superstars Multiverse is an Open-World video game developed and published by SEGA and released on January 5th 2023. Starring franchises include Sonic the Hedgehog, Puyo Puyo, Yakuza, Bayonetta, Shin Megami Tensei, Persona, Virtua Fighter, Jet Set Radio, Super Monkey Ball, Phantasy Star Online 2, Crazy Taxi, etc.
= Gameplay =
Basically Sonic Frontiers because this game IS Sonic Frontiers only a SEGA crossover game.
= Story =
Ever since the Evolution of Universes, the Life Cycle is always something exciting and terrifying to discover, but for every reality, there's a possible one with Countless of Universes, known as the Multiverse, with similar but distinctly different laws of nature. In this game in particular, Two new dimensions have been formed: The Starfall Dimension and the Cyberion Dimension. The Starfall Dimension is a dimension where its Multiverse is inhabited by a civilization race called The Super-Ancients, Immortal Super-Humanoids evolved from the Original Ancients from Past Realities, and the Descendants of Chaos. The Cyberion Dimension is a dimension where in its various universes, Digital things are made Physical, and that the dimension is inhabited by a race of Intelligent Robo-Humans called the Digitrons. And there's of course, the SEGAverse dimension, the main setting of the game which is the Multiverse of SEGA properties (Being the various universes where Life exists in each of them).
In this game's story, while the heroes and villains are minding their own businesses in mundane life, the Sonic Universe is under attack by an evil organization called The Behemoths, lead by Emperor Devilion the Hedgehog, an Evil hedgehog who runs a Dark Empire called the Hellfire Empire. The Hellfire Empire is the 4th dimension in the game (after the SEGAverse, Starfall Dimension and Cyberion dimension) which serves as a Multiverse (made from Ruins of Past Universes from barren dimensions.) where Order and Neutrality is the Norm, and that Emperor Devilion is a Tyrannical ruler just like Dr. Eggman only worse. Not only that, the people in his empire is JUST AS RUTHLESS AS HE IS. The main domain of the Hellfire Empire is a "Hypergiant" planet called Armagon (Named after a Boss from the Quake game series) orbiting a Perfect-Ultimate-Giant star called Omni-Solario (Which is one of the many Immortal Stars that give life using Infinite-Energy). Emperor Devilion's first invasion is the Sonic Universe where he attacks the Solar System by having a Supergiant Purple Exoplanet called Leviathan CRASH into the Sonic!Solar System's Sun, Sun-23061991, blowing it up, causing the planets to go haywire and Mobius!Earth to give birth of Devil-Matter creatures, attacking Sonic and his friends, forcing them and survivors to flee into the Starfall Dimension, landing in one of its universes, Uni-Polaris 399, prompting the start of the game.