sracer asks the key question in #3. If you have an:
- Intel Mac, you've got a great Windows computer too. Explore the bootcamp option and set yourself up.
- Silicon Mac, there is a variety of emulation options for Windows but my advice is to add an actual PC.
Pricing for a relatively great PC is nothing close to Macs, especially if you jack up the storage and RAM (there's lots of competition for those key parts on the PC side, so prices are driven way down vs. the SOLE supplier on the Apple side being able to charge many times for equivalent storage and RAM for Mac).
Go this way and you can play ANY game for either platform to your hearts content.
I call this option "old fashioned bootcamp" and went that way myself. For under the budget of what Apple charges to upgrade to 8TB of storage in Silicon Macs, I got a fairly potent gaming PC with 10TB of SSD storage and 32GB of RAM.
I also chose a (not Apple) 5K2K monitor with
multiple inputs so that both my Mac and the PC can share the
same screen (even at the same time if I like). It has a hub so that both can also share the same keyboard, mouse and various accessories.
A not-so-well documented bonus to select PCs is that you can get one with a Nvidia graphics card, which can then share the game to your television (and probably best speakers) through AppleTV and the free
Moonlight app. I pessimistically assumed this would NOT work well but I was wrong about that:
it really works well! Now all TVs in the house with AppleTVs are able to be used for PC-quality games.