This monograph is one of APCEIU's EIU Best Practices Series, which aims to encourage educators, scholars, and activists to implement and share local initiatives on EIU. The Series No.55 introduces ‘ØkoEngineer’ which is a sustainability learning platform created to educate engineering students in Aarhus on sustainability concepts and how they couple with engineering design through the gamification of project-based learnings. The project aims to prepare the future engineers to play their crucial role in the significant global issues that we face. In response to the above challenges, future engineers, today's students are embracing initiatives that stimulate sustainability education. The students are motivated by the urge to relate sustainability with their domain-specific engineering theories. ØkoEngineer is a web-based game platform designed for integrating sustainability learning in engineering curricula.