REVOIR is an interactive mirror, activated by emotion detection to create stories through visual landcapes. As observers change their facial expression, the visuals assigned to different emotional states are blended into the medium. This mirror makes the act of observation a part of the creative act: by observing, the audience influences the medium. The medium becomes an open-ended exchange with its audience. © Mario Gagliardi Design 2018. This project was selected as finalist in the Playable Museum Awards 2018 of Museo Marino Marini in Florence, Italy. Try it out at https://www.penccil.com/revoir or see a short video at https://www.penccil.com/movie/revoir.mp4