Adult PC Game: Megacock - MilfBender Ver.1.6 Win/Android Archive

This is a trainer game about male student (18+) training his bitchy math teacher. The game allows free user text input, so is pretty experimental. The teacher is basically AI-chatbot integrated into the game, it allows the player to communicate with her using natural language.
You can read more about the game in this post:

Megacock - MilfBender Ver.1.6 Win/Android Gameplay Preview