Speedcubing, the competitive practice of fast solving the Rubik’s Cube, has gained global popularity both as a sporting and an educational activity. Aside from its recreational value, speedcubing may contribute to broader social and developmental outcomes. This study aims to examine the potential of speedcubing as a tool for sustainable social development, concentrating on its educational, psychological, and social implications and its relationship to selected United Nations Sustainable Development Goals (SDGs). An anonymous online survey consisting of 26 items (22 used for the main analysis and 4 demographic items) was conducted among 112 participants associated with the speedcubing community, including active competitors, coaches, and parents. The questionnaire addressed accessibility, cognitive and social competencies, and perceived educational and social benefits, as well as user preferences regarding digital tools supporting learning. The results indicate that participation in speedcubing supports the development of analytical thinking, problem-solving skills, perseverance, and self-control. Respondents also emphasized its educational value, accessibility, and role in fostering fair play and social integration. These findings suggest that speedcubing may contribute to several Sustainable Development Goals (SDGs), particularly SDG 3 (Good Health and Well-being), SDG 4 (Quality Education), and SDG 11 and SDG 12 (Sustainable Cities and Communities; Responsible Consumption and Production).