Cool Choices
4-6 week online team-based sustainability game. Teams of employees, congregations, or community groups log daily sustainable actions; points appear on a public scoreboard visible to all players. Used by Miron Construction, law firms, school districts, etc.
Public team-vs-team scoreboards within each deployment (e.g, Miron's offices compete against each other). Multi-organization deployments pit company teams against each other across the state. End-of-game prizes for top team AND top individual.
Teams are 5-15 colleagues from the same workplace/community. Members see each other's daily logs, encouraging mutual reminders ('did you carpool today?'). Team leaders coach and rally members. Research published in Journal of Environmental Psychology showed the social/team element drove the behavior change.
One of the most thoroughly studied examples. Peer-reviewed evidence that the team+leaderboard combo (not the individual app) is what drives behavior change. Highly transferable model.
Others in the same family
STADTRADELN (City Cycling)
21-day national bicycle-kilometer competition organized by Klima-Bündnis (Climate Alliance). Over 1.2 million participants in 2024-2025. Citizens log kilometers via app or website; municipalities and councils form teams.
STADTRADELN (CITY CYCLING)
Run by Climate Alliance, a 21-day campaign where municipalities sign up to compete on per-capita and absolute cycling kilometers. Mandatory team affiliation; tracked via the CITY CYCLING app GPS or paper log.
Energy Sparks
Charity-run platform that pulls schools' smart-meter data into an energy-analysis dashboard for pupils and staff, with explicit competition layer.
City Nature Challenge
Started 2016 as LA-vs-SF friendly competition; now an annual end-of-April 4-day bioblitz where cities compete on most observations, most species, most participants. Using iNaturalist. Run by California Academy of Sciences + Natural History Museum LA.
Trash Hero World (chapter league)
Swiss-registered nonprofit where each town runs a chapter (resident-led volunteer team) doing weekly cleanups, supported by a global mentor team. Chapters share branding, handbook, methodology.
Eco-Olympics / Green Cup (campus residential)
Month-long competition between residence halls (dorms) on percent reduction in electricity and water vs baseline. Tracked via real meter data, often visualized on color-changing orbs (Oberlin BuildingOS).