Crowdsourcing and storytelling by gamification. The document discusses how crowdsourcing can be used to collect geospatial data as data is increasingly abundant. It proposes using games as a platform to visualize crowdsourced data and tell stories with maps to gain insights. Examples mentioned include using games to collect data on issues like haze and an interactive 3D cholera map that helped prove John Snow's theory on how cholera spreads through water contamination.