Interspecies Impregnation Simulation Royal Capital Invasion Operation

A dark fantasy monster-crafting game where the player, serving a demon queen, must create new hybrid monsters to infiltrate and corrupt a human kingdom. The core gameplay involves kidnapping a holy maiden and using her body as a vessel for monster gestation through surgical modification and careful breeding—managing the implantation of monster larvae, feeding and care routines, and applying physical and psychological stimuli to influence the mutations of the growing creatures. Each monster born has unpredictable traits and combat strength, ranging from kingdom-conquering abominations to creatures that may turn against their creators. The game culminates in deploying the monsters to weaken the kingdom's defenses before launching a final assault led by the demon queen against the kingdom's princess and knights.