Brief: Create a movement to reinvigorate London's nighttime economy.

Underfound is a scavenger hunt where participants discover experiences instead of objects. Teams have one night to finish a series of challenges that range from the sublime to the ridiculous. These challenges are inspired by, and located around, the 144 stations open at night. Participants document their experiences and upload their entries to the Underfound website or app. Bonus points are awarded for creativity, flair, and sharing on social media. The team with the most points at the end of the night wins free travel for the year.

Credits: App design by Lewis.