While Ye Tian was locked in battle with the Orc Warrior, the world outside had changed far more drastically than anyone could have anticipated.
Every building, street, and even the tiniest corner of civilization had transformed into a dungeon.
Dungeons... mystical anomalies formed when mana concentrated in a single area... were natural but highly dangerous phenomena.
The mana would coalesce to create a portal, a gateway to horrors that spilled monsters into the mortal realm.
These dungeons formed primarily in areas with large populations or abundant raw mana, acting as magnets for both.
Once formed, the dungeon would emit a field of energy that trapped everyone inside.
Leaving was not an option.
You could enter a dungeon willingly, but escape became impossible unless you either cleared the dungeon or faced its collapse.
And a collapsed dungeon?
That was the worst-case scenario.