“Dream Tweet” is an interactive installation that creates a collective dreamscape of the crowds’ dreams and nightmares from the night before. Visitors at “Dream Tweet” were asked to share their dreams via twitter with hash tags to describe the characteristics of the dream. Projection mapped Tweets poured out into the “Dream Tweet Bedroom” with typefaces unique to their hash tags. Twitter, a familiar and widely used social platform, was a perfect choice for extracting the dreams from the crowd. The experience was enabled by our twitter aggregation system that collected and processed the tweets into the installation real-time. “Dream Tweet” gave us a glimpse into what the world of dreams looked like that night before.