Since the formalisation of the STEM acronym (Science, Technology, Engineering, and Mathematics), several conceptual variations have emerged, aiming to integrate additional fields. These adaptations reflect a broader understanding that a traditional STEM framework alone may not fully prepare learners for the complexities of modern global challenges. The paper investigates the origins of these expanded STEM frameworks. A hypothesis this study suggests and investigates is that distinct variants of STEM education may require differentiated instructional strategies, such as Project-based learning, Inquiry-based learning, Game-based learning, and Integrated learning. The narrative review has been chosen as a methodological approach. This approach facilitates a nuanced understanding of the diverse trajectories within the expanded STEM variants, supporting the identification of both opportunities and barriers to their integration into modern educational systems. Another major issue that arises concerns the evaluation process and the outcomes related to students’ knowledge and skills. The study examined the educational benefits provided by STEM variants, including fostering interdisciplinary collaboration, enhancing cognitive flexibility, and promoting access and equity in STEM fields. Challenges were also investigated, and these concerns include the implementation of variants, curriculum redesign, teacher training, and resource allocation. On the other hand, these interdisciplinary and inclusive STEM variants aim to create learning environments that are not only equitable and accessible but also dynamic, reflecting the diverse skills and perspectives required in the 21st-century global workforce.