This book describes mostly about Congestion Game Theory (a special class of Game Theory ) and it's practical Applications. Here in this book we have solved a graph problem using the concept of Congestion Game Theory . There are very rare book available in market on Congestion Game Theory, I am sure this book will definitely help people to know about Congestion Game Theory . The most Important part of this book is application part, where we have solved the graph problem using programming code in C and each detail of the output is also given to give clear understand . One can apply the concept of congestion game theory in many day today physical problems after reading this book.