The virtual humans used for conversational simulations all engage in "motivated conversations," which is similar to film and television scenes -- or, real life. While there is access to passive data acquisition, the "motivated" characters return the user to the scene to progress toward a conclusion. This format is well suited for English as a Second Language conversational simulations, where User improvisation is encouraged without resulting in failure.
(Download URL is Android Marketplace)
(Web URL is MOBILE WEB: WAP-HTML Browser URL)