Xbox 360 emulation has, surprisingly, come to the Apple ecosystem. Classic, beloved games from the era, like Halo 3 and Grand Theft Auto 4 may, in time, be fully playable on iPhone, iPad, and Mac.
XeniOS is an off-shoot of an existing Xbox 360 emulation project, Xenia, and is being developed specifically for Apple devices (cheers, Windows Central). Xenia is an Xbox 360 emulator for PC, and XeniOS is, according to its website,
Halo 3 And Other Xbox 360 Classics Now Playable On The Go
