Façade

Façade is a 2005 interactive storytelling video game by Michael Mateas and Andrew Stern. Conceived by the developers as an "interactive drama", Façade tasks the player to use text input to converse with two characters, Trip and Grace, who are experiencing conflicts in their relationship. The game uses artificial intelligence methods, including natural language processing, to simulate a conversation between the player and two characters. The developers, Mateas and Stern, both carried an interest in artificial intelligence and interactive entertainment, and began work on the game in 1998.