In the MCU/Marvel with the Omnitrix/Ultimatrix - Chapter 46: Mischief

Several hundred thousand players are trapped in a gritty zombie apocalypse survival game just after game launch. There are hints that deaths in the game might be serving some other terrible purpose in the background of reality…

The main character, Liu Gan, is a quadruple amputee in real life. A quirk in the server code recognized his prosthetic limbs as ‘real limbs’ in game, giving him ‘normal’ arms and legs that nonetheless have the strength and power of steel limbs, and thus far more power than a normal player. With this minor cheat helping him survive the early stages of the game, Liu Gan sets out to find out what exactly is going on, and to endure as long as he can.

- Description from Novelupdates

Leon was once an ordinary man—until he died saving children and woke up in a new world as the last prince of the demon race. But his awakening comes with a cruel truth: the war is already over.The Demon King is dead. The once-mighty demon empire lies in ruins. And now, Leon stands amidst the ashes, surrounded by a handful of survivors teetering on the brink of extinction.Crowned Demon King by default, he holds the title—but there is no kingdom left to rule. The few remaining demons are barely surviving, hunted and outnumbered. Worse still, Leon, who once enjoyed the luxuries of modern technology, must now navigate a harsh world stuck in the Middle Ages.Can he pull the demon race out of their misery? Can he reclaim the power they once held? Or will history remember him as the last king of a fallen race?Follow Leon on his journey to rebuild, conquer, and defy fate itself.

Ye Feng transmigrated into a parallel world where there were few games and obtained the game production system.As long as the players gave a “super difficult” rating, he could improve his game production ability,However, seeing the “very easy” comments on the game forum, Ye Feng was shocked, and he descended to the alternate world with the ninth art.“Getting Over It With Bennett Ford”, “Undead Cells”, “Bleedborne”, “Sekiro”...A series of games was born.He would like to see who dared to say that these games were very simple!Admit it, rookies. It's all because you suck！However, players whose confidence was shattered by these games still firmly moved the cursor to that option!“Very easy!”

In the continent of Chang’an humans had lived as livestock and slaves to the Primordial Beasts. These beasts were ferocious, bloodthirsty and overwhelmingly powerful, but even so, the humans managed to prevail in the face of despair.