Game Design Starts in the Demon King's Castle

[I changed it a bit. The previous setup was hard to write with the derivative background. I'm very sorry! If you liked the old version, feel free to remove it from your favorites.]

*

The protagonist transmigrates to another world and becomes the legendary Demon King.

The Demon King protagonist has no money at all. Before she can starve to death,

she discovers that she can draw power from other people's emotions.

Before she transmigrated, the protagonist was a game designer, so she immediately comes up with a new idea.

Design a game and lure adventurers into playing,

then make them suffer!!

And so,

the great Demon King takes her first step toward making adventurers suffer:

Want to travel across the map?

Sing