Princess Tower is an erotic , kinky trainer game made in Ren'py that focuses on extremely interactive h-scenes. It also tries to have a few good jokes somewhere in there. :)
The player takes on the role of Frim of Coombmere, a hedge wizard in the employ of the Dark Imperium, tasked with taking care of Princess Ariane in order for the Dark Imperium to tighten its grasp on conquered territories. Frim decides that the best way to approach this task is to train obedience and submission - and if that training involves a little kinky sex, all the better.