Research has shown that playing commercial-off-the-shelf (COTS) games can have a positive influence on L2 English vocabulary learning. COTS games are commercially available digital games, either for computer or console, which are designed for entertainment (Reinhardt, Gameful second and foreign language teaching and learning: Theory, research, and practice. Palgrave Macmillan/Springer International Publishing, 2019). Thus, such games constitute a resource for vocabulary learning, but one that appears largely unexplored in the field. In this chapter, we focus on how...