Dreadful monsters were stirring in the cave where Udonge had fallen into.
Low-class monsters starving for females creep up, one after another.
Can she escape the violence of sexual desire, or will she be trapped and have everything destroyed by sheer pleasure and humiliation?
This is a derivative work, a fan work of Touhou Project.

Action Game

Control Udonge to break through the caves.

"Udonge in Interspecies Cave" is a simple action game. Move, jump, shoot! Use these actions to break through the dungeon teeming with monsters.
Defeat the three stages and their bosses.

If your health reaches zero...

You'd better recover quickly, or something unbelievable will happen...

When your health reaches 0, Udonge becomes immobile. By pressing the move keys left or right, you can charge a gauge to get back up... but if you're caught by a monster during this time...

Something unbelievable...

Unthinkable consequences! Various monsters each have their own dot motions on the map. You can still escape in this state, but if a certain event happens, it's game over...