This book compiles compelling case studies of businesses from a competition organized by Social Business Creation, an initiative at HEC Montréal in Canada that uses gamification to impart knowledge about social entrepreneurship. Curated by four esteemed academics, these narratives reveal strategies, mechanisms, and impact in addressing pressing social issues.   Each study showcases entrepreneurship in action, highlighting how businesses effectively leverage market forces to drive positive social change. Across sectors and geographies, they offer insights into innovating business models, scaling impact, and fostering social innovation. Each case study vividly portrays entrepreneurship in action, effectively demonstrating how the business sector can harness market mechanisms to propel positive social impact. These narratives span diverse sectors and geographical locations, offering invaluable insights into social innovation generation, the implementation and scaling of innovative business models, and the acceleration of social impact.