Arguably, all modern Macs (with M1 and M2 chips) have GPUs suitable for reasonably high-end gaming. These have the same GPUs used in high-end iPhones and iPads, but with more cores, more RAM, and more memory bandwidth.
Some of Blizzard’s titles (World of Warcraft, Hearthstone) were already ported to be M1-native. But even the older titles that haven’t been ported (StarCraft 2, Heroes of the Storm, etc) run great despite being emulated. In fact, they run much faster and smoother on my M1 Mac than they ever did on my Intel Macs!!
You’re right, though, that Apple’s attachment to Metal and lack of built-in support for industry standard APIs like Vulkan is an issue (although a 3rd-party Vulkan implementation is available).
Some of Blizzard’s titles (World of Warcraft, Hearthstone) were already ported to be M1-native. But even the older titles that haven’t been ported (StarCraft 2, Heroes of the Storm, etc) run great despite being emulated. In fact, they run much faster and smoother on my M1 Mac than they ever did on my Intel Macs!!
You’re right, though, that Apple’s attachment to Metal and lack of built-in support for industry standard APIs like Vulkan is an issue (although a 3rd-party Vulkan implementation is available).