Apparently since macOS Catalina 10.15 Mac disabled assist for 32-bit apps?

How can Steam video games like Portal 2 be performed on MacBooks which were maintaining with macOS updates?

In my case I might like to do that on Intel MacBooks from 2015.

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I rolled my 2018 Mac Mini again to Mojave.

In hindsight, I would not have performed that (I misplaced just a few factory-loaded apps). I’d have gotten a very quick USB thumb drive and put a Mojave OS (and the video games) on that. That individual drive is what I used for my gaming till I bought a barely sooner USB-C drive. Apple explains tips on how to get earlier variations of macOS, right here.

MacWorld has a process on that. You may want to make use of a partition on a second thumb drive to put in the earlier model OS X installer after which reboot to that thumb drive for the set up correct in case the ten.14 installer does not need to run underneath Monterey.

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