The emulation of Mac OS 8 on the iPhone X worked pretty flawlessly as evident from the video, with even the native web browser working just fine.
And as if that was not enough, the devices are then also used to play Warcraft II and SimCity 2000. Now, a new video shows the iPhone X and iPad Air 2 running macOS 8. This has largely been made possible by enhancements to emulation software and the powerful hardware newer iPhones nowadays come with. We have already seen older versions of Windows and games being emulated on newer iPhones.