MTL - The Heavens of Online Games Are Coming - Chapter 1102 underworld means

In a world ruled by false gods, two souls must rise beyond death to shatter divinity itself.When Raphaeldor and Leonatus awaken in the mystical world of Elyndra, they are not ordinary men—they are reincarnated souls, chosen by a forgotten prophecy to challenge the divine order. In this realm where aura and mana shape the very fabric of life, power is worshipped and truth is buried beneath centuries of myth.Guided only by a mysterious being known as the Pathmaker, the two must walk a perilous path of growth, conflict, and awakening. As they ascend through the ranks of strength and unravel the mysteries of Elyndra, they discover a harrowing truth: the so-called gods are nothing more than mortals who transcended and seized divinity for themselves, bending the world to their will.With divine thrones looming and the fate of creation in the balance, Raphaeldor and Leonatus must decide whether to accept the lies that shaped the world—or to defy the heavens, expose the deception, and uncover the will of the true God who lies beyond the veil of eternity.The journey of the transcendent begins.The odyssey of truth awaits.

Xu Yiyang, who was only late in his life when he was middle-aged, returned to 1999 in a dream.

At the turn of the millennium and the turn of the century, he realized a truth:
Not only to be famous early, to start a business and make money, but also early!
………………
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- Description from Uukanshu

Achieving the power to create virtual worlds.

To expand his world, he needs to devour other worlds.

As such, the world ushered in the most greedy, sly and terrifying existence in the world ——— The Gamer

- Description from Novelupdates

Where does the game end? Where does reality start?

When one very anticipated VRMMORPG was about to be launched, and Jake was one of the first players to have a chance to access it, he had a weird dream of himself fighting massive beasts and then seeing a world being destroyed.

Without knowing any better, Jake assumes that it was just a weird dream, but then he begins to have those weird dreams again and again until they become even more vivid, and much to his surprise, whenever the dream changes, he obtains a new power inside the game.

It doesn't take long for Jake to realize that he isn't the only one who has those dreams, and soon enough, Jake realizes that the game and reality are a lot more connected than he thought.