Quantum game theory stands at the intersection of two transformative disciplines: quantum mechanics and game theory. While each field has matured in its own right, their convergence opens up unprecedented avenues for strategic modeling, quantum decision-making, and computational paradigms that challenge classical limitations. Despite the growing academic interest, a comprehensive and accessible resource bridging these domains remains scarce. This book was conceived to address this gap-to provide a structured, self-contained, and application-oriented exploration of quantum game theory for students, researchers, and professionals alike.The quantum world is inherently strategic, filled with choices, uncertainty, and interactions at a fundamental level. Game theory, traditionally rooted in economics and logic, offers a natural language to describe these interactions. Merging them not only enhances our theoretical understanding but also leads to practical implications in quantum computing, cryptography, artificial intelligence, and evolutionary biology. It is this exciting synthesis that motivated the creation of this book.