Survive the Apocalypse? but What I Was Playing Was Obviously a Game.

[Terminal disease + doomsday game + science fiction apocalypse + krypton gold survival + game invasion + unlimited streaming] Su Xian, who is terminally ill and has only three months left to live, receives a mysterious VR helmet. Putting it on, he entered a game world that perfectly replicated reality, and here - zombies were rampant and the doomsday was coming. The game mission is simple: survive for 30 days. However, this game is terrifyingly real. The roars of zombies, the touch of flesh and blood, the despair of dying... Are all so clear that they don't look like virtual reality. What's even weirder is that the "enhanced crystal core" he obtained by killing zombies in the game can actually relieve real-life illnesses; As his strength increases in the game, his body also becomes stronger in reality! In order to survive, Su Xian could only work hard to become stronger in the game. But this game is simply a gold-swallowing beast - saving money costs money, resurrecting costs money, and even a rusty sword requires a first charge! Just when he thought this was just a realistic paid survival game, he gradually discovered: The "teammate" she met in the game turned out to be her former boss. She also plays games? Or just NPCs? And outside the window of the real world, it seems that changes have begun to occur because he entered the game world again and again... Is what I play really just a game?