Have you ever wanted to whistle, play or move while waiting for the metro or the bus at night? The wait can be long and anxious. On average, night-time Nantes users wait 20 minutes at tram stops. Ophelia thought about it. She created Smile in the light: interactive platform games that create nighttime social interaction. Arcade games are projected onto the ground via two video projectors, and users play through webcams that capture their silhouettes. By bringing players from one stop to play with those opposite, this project awakens friendliness, team spirit and relaxation in the participants. Everyone goes home… with a smile!