Nominal Game Semantics complements existing introductory literature to game semantics, which highlight the then new structural components necessary to model higher-order computation; for example, arenas, justification pointers, and innocence. In contrast, this monograph focuses on explaining the nominal content of our games. It begins by covering the basics of nominal sets before proceeding to introduce the programming language of study, called GroundML. GroundML is a higher-order language with references capable of storing integers, references to integers, references to references to...