From yesterday a large number of Steam users reported that they were seeing a '[GAME] is not optimized for your Mac' alert. If you've seeing the same thing, you are likely running a game that is a 32-bit app on macOS 10.13.4.
35 Steam Games from Aspyr Are Affected
Not all game developers have updated thier popular 32-bit apps to 64-bit to ensure future playability with macOS. Aspyr, an American video game developer and publisher, says that so far its remedy for this upadte is currently unknown. We understood the 32-bit to 64-bit transition does present unique development challenges, and it's not yet known if every Aspyr game will be upgraded. This update affects the following Steam games from Aspyr Media:
- BioShock Infinite
- Borderlands 2
- Borderlands: The Pre-Sequel!
- Call of Duty 2
- Call of Duty 4: Modern Warfare
- Call of Duty: Black Ops
- Call of Duty: Modern Warfare 3
- Civilization IV
- Civilization IV: Colonization
- Civilization V
- Command & Conquer™: Generals Deluxe Edition
- Company of Heroes Complete: Campaign Edition
- Doom 3
- Duke Nukem Forever
- Fahrenheit: Indigo Prophecy Remastered
- Geometry Wars 3: Dimensions
- Homeworld Remastered Collection
- Prey
- Quake 4
- RAGE
- RollerCoaster Tycoon 3 Platinum
- SimCity 4: Deluxe Edition
- SimCity: Complete Edition
- Star Wars: Empire at War
- Star Wars: Knights of the Old Republic
- Star Wars: The Force Unleashed
- Star Wars Jedi Knight: Jedi Academy
- Star Wars Jedi Knight II: Jedi Outcast
- The Secret of Monkey Island: Special Edition
- The Sims 2: Castaway Stories
- The Sims 2: Life Stories
- The Sims 2: Pet Stories
- The Sims 2: Super Collection
- Tomb Raider II
Aspyr has announced that today is the last day of sales for its 32-bit Mac games, in anticipation of Apple's upcoming move to 64-bit only apps on macOS Catalina later this year. By cleaning up 32-bit Apps/Gamings from macOS, Apple hopes that this alert will help gamers and game developers to raise a concern about the modern design of Mac apps/games. According to Apple: 'To ensure that the apps you purchase are as advanced as the Mac you run them on, all future Mac.
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Everything You Want To Know About This Alert
By cleaning up 32-bit Apps/Gamings from macOS, Apple hopes that this alert will help gamers and game developers to raise a concern about the modern design of Mac apps/games. According to Apple: 'To ensure that the apps you purchase are as advanced as the Mac you run them on, all future Mac software will eventually be required to be 64-bit.'
Mac Os 32 Bit
- Q: Why am I seeing this '[GAME] is not optimized for your Mac' alert? A: Starting with macOS High Sierra 10.13.4, apps that have not been updated to use 64-bit processes produce a one-time alert when opened. This gives users advance notice that they are running 32-bit software/game, which will not be compatible with macOS in the future.
- Q: Can I keep playing my 32-bit games on my Mac? A: Yes, you may continue to play 32-bit games with your Mac today as this is just a reminder alert. This has no adverse effect on your data or your computer.
- Q: How do I check if my Steam game is 32-bit or 64-bit? A: On Apple menu > Choose About This Mac > Click the System Report button > Software > Applications. When you select an individual game, you will see a field titled '64-bit (Intel)'.
The Bottom Line
Please feel free to contact us if you have similar problems or concerns and we will update this thread as we have news or updates. Leave your message in comment box below to join the discussion with other steam gamers.
More macOS/Apple Related Tips
Mac 32 Bit Support
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Apple began transitioning to 64-bit hardware and software technology for Mac over a decade ago, and all modern Macs now include powerful 64-bit processors that can run advanced 64-bit apps. These apps can access dramatically more memory, enable faster system performance, and take advantage of technologies that define today's Mac experience.
Apple has been working with developers to transition their apps, and in 2018 Apple informed them that macOS Mojave would be the last version of macOS to run 32-bit apps. Starting with macOS Catalina, 32-bit apps are no longer compatible with macOS.
If you get an alert about a 32-bit app
You will see one of these alerts when attempting to open a 32-bit app:
[app name] needs to be updated.
The developer of this app needs to update it to work with this version of macOS. Contact the developer for more information.
[app name] is not optimized for your Mac and needs to be updated.
This app will not work with future versions of macOS and needs to be updated to improve compatibility. Contact the developer for more information.
Can't Play 32 Bit Games On Mac
When installing macOS, you may see a list of recently used apps that are 32-bit. You can review this list before deciding to continue installation. You may also see a prohibitory symbol over the icon of each 32-bit app in the Finder, letting you know that the app will not open.
For all 32-bit apps, please contact the developer of the app to learn whether an updated version of their software is available or planned.