Actually no, I think it will be incorporated in the game with , spell, devise, spirals and drools :) but will not be call hypnosis because of lot of ban content.
Viewing post in Tower of the last Demon (AN ABDL RPG) Ongoing comments
There is no forcing or brainwashing but the characters are controlled (by their will ) by the link spell to explore the dungeon.
In this one there are a lot of traps that can lead to temporaly mind changing. The dungeon is designed by a high being that corrupt people in a way that it can touch their deep desires.