Explore the intricacies of building and porting Game Boy emulators using cross-platform C# in .NET Core in this 51-minute conference talk from NDC London 2021. Dive deep into the world of machine code, opcode translation, and real-time emulation. Gain insights into low-level emulation techniques, software porting strategies, and the process of building debuggers. Learn about the inner workings of the Game Boy, including its CPU, memory addressing, and display system. Discover the challenges faced during development, such as crashing bugs, and the tools created to overcome them. This talk not only provides technical knowledge but also emphasizes the importance of pursuing projects for the sheer joy of learning and exploration.