Emulation for Xbox 360 games is good, but only a few titles are playable. The use of static recompilation, not emulation, may ...
You can play Xbox 360 games on your PC with an emulator called Xenia. Xenia is a Windows program that replicates the Xbox 360 console in software form so that you can play Xbox 360 games on your PC.
Sonic Unleashed is the first Xbox 360 game to receive a native port via Recompilation on PC, and the tools used have been open sourced.