“Dream Tweet” is an interactive installation that creates a collective dreamscape of a crowd’s dreams and nightmares from the night before. Visitors shared their dreams with our community via Twitter using hash tags. Projection-mapped tweets poured over our “Dream Tweet Bedroom” with unique typefaces. The tweets cascaded the wall and spilled over each other to mimic the free-flowing nature of dreams. The popularity and accessibility of Twitter made it a perfect tool for extracting the crowd’s dreams. The experience was enabled by our own Twitter aggregator that collected and processed tweets into the installation in real-time.