Sure. There are some on fanfiction.net. You can search by the title 'War of the Monsters' and explore different stories based on the game's universe. Some might focus on new monster designs, while others could explore the backstories of the existing monsters in more depth.
Another place to look for 'War of the Monsters fanfiction' is Archive of Our Own. It has a wide range of stories. Some of the fanfictions there might be more character - centric, focusing on the relationships between the human characters in the game world, and how they interact with the monsters. It could be really interesting to see how different authors interpret the game's lore in their writing.
Look to Chapter 37 for the clearest answer. It begins with The barrage was suddenly filled with hahas, but the two guests present..., keeps building through He Yun spent most of her time filming movies, had no interest in variety..., and lands on I look forward to your guidance." He Yun nodded.
Chapter 76 is the strongest chapter-level answer because it starts from Thinking of this, the aunt repeatedly praised, "Girl, hearing your words... and follows through on Soon, Shu Yan also couldn't hold out any longer, leaning against the tree....
The best chapter pointer here is Chapter 26, "Sending My Big Brother to a Transformation Variety Show". It opens with Shen Lan was bent over processing a large stack of press briefs on her... and closes on If you think you can use our family connection to have me handle this....
Look to Chapter 65 for the clearest answer. It begins with Several minutes later, the room remained silent., keeps building through The cameraman then discovered that Jiang Li's door wasn't properly shut,..., and lands on What's the deal with these two?.
If you want the clearest chapter reference, go to Chapter 34. Early on, Seeing that the public sentiment wasn't quite right, Su Yinwan felt...; later, the chapter leans on It was she who had anonymously paid someone to write the critical article....
Look to Chapter 26 for the clearest answer. It begins with Shen Lan was bent over processing a large stack of press briefs on her..., keeps building through She was nearly forty years old, but because she took good care of herself..., and lands on If you think you can use our family connection to.
If you want the clearest chapter reference, go to Chapter 31. Early on, Before Shen Lan had reached the backyard, she already heard the sounds of...; later, the chapter leans on Facing the freshly risen morning sun, she noticed at a glance the girl....
If you want the clearest chapter reference, go to Chapter 66. Early on, I can't take it anymore, why did the young master even find a pair of...; later, the chapter leans on He just knew that his eyes were swollen like a small hill and he couldn't....
If you want the clearest chapter reference, go to Chapter 80. Early on, Jiang Yan and Wen Jiaojiao, one so smug he was almost ascending to the...; later, the chapter leans on And this was exactly the scene Director Sun wanted to see..