Novels like Dungeon 42

All share Dungeon Core

Cat Girl Evolution

Also GameLit and Comedy

My Kaiju Evolution

Also GameLit and Portal Fantasy / Isekai

RE: Deity - The Breath of Creation -

Also Comedy and Portal Fantasy / Isekai

Soul -The killer King

Also GameLit and Comedy

The King and the Core, a Dungeon Core Story

Also GameLit and Comedy

Reincarnated as a Thermodynamic Anomaly

Also GameLit and Comedy

My Roommate Got The Legendary Hero Rank. I Got Commoner.

Also GameLit and Comedy

Motherless Psychopath Evangeline

Also GameLit and Portal Fantasy / Isekai

The Cathedral of Eternal Darkness

Also GameLit and Comedy

A Dearth of Choice (Dungeon Core)

Also GameLit and Comedy

The Dungeon of Arceus

Also GameLit and Comedy

Greedy Dungeon (A Meanspirited Monetary Dungeon Core Lit-Rpg)

Also GameLit and Comedy