CrowdGauge

From the website:

CrowdGauge is an open-source framework for creating educational online games. It first asks users to rank a set of priorities, then demonstrates how a series of actions and policies might impact those priorities. The third part of the sequence gives users a limited number of coins, asking them to put that money towards the actions they support most.

Sasaki Associates first developed the platform in partnership with the Des Moines Area MPO (DMAMPO) as part of The Tomorrow Plan, a regional plan for sustainable development in the Central Iowa region.

The code is available on GitHub.