Actually, it seems to just be a quarantine issue. I managed to run the app just by having executed: xattr -d com.apple.quarantine /Applications/MacCrackAttack.app. And Thanks, @macbishop for having crafted and released this mac version.
I think there is some other issue involved as only HFS+ filesystems were involved when building. I no longer own a Mac (Intel or ARM), so if anyone is up for cutting a new release, I'd be more than happy to have it uploaded here.
The solution may be to use an APFS or HFS+ filesystem when signing the app. Then the '._'-files won't be included in the code signing manifest.
App won't launch on macOS 11 because of code signing issues
Fix upload script since SF changed the layout years ago.
Pull updated web page from sourceforge.
Bump version info to 1.1.6.
Reformat with UNIX line-endings
Update with new versions, also use new link format
Update version info to v1.1.6
Compile in libtiff support (missing libz dependency)
Compile in libz (needed for libtiff support)
Update to xcode 12 format
Update changelog for 1.1.6
Conversion to newer xcode version
Code hygen (clean warnings)
CPU utilisation is too high
Version 1.1.5 should fix this issue by limiting the frame rate.
Update version info file
Allow downloading version info from http (not https)
Convert MainMenu to new xib format
Added note about building extra libraries
Update CocoaGameStarter nib to new format
Update changelog
Replace VersionHandler with new .xib format
Move debug macros to separate header and add some debug messages
Setup "Release" build
Help text and localization
Minor UI tweeks
Removed unused old xcode project files
New version of libz for 10.6 deployment target
Update version number and "fix" "broken" .nib files.
Remove unused libjpeg
Fix swedish version
Update libtiff to match target version
Enable more warnings and bump deployment version to 10.6
Deleted MainMenuHandler.nib since it was "broken"
Fix MenuHandler to work with new version of Xcode
Fix warnings
Updated project file with latest changes
Fix encoding (utf-8)
Added helper class to count FPS
Fixed some potential security issues (non-const...
Make sure to sleep in order to prevent too high...
CPU utilisation is too high
Added .gitignore file
Added user specific xcode files to ignore list
Fix compile problems
Added additional library/header deps
Fixes after rename of Block.h
Updated project files
Removed useless CVSROOT dir
Removed .DS_Store files
Renamed Block.h to avoid conflict with Mac OS h...
Fixed (hopefully) the "game-over-after-going-to...
Initial import.
Used for TIFF image textues (used in intro)
Final fixes for 1.1.3 release
Some rewrites, no functional changes
Lower volume
Fixed spelling
initial checkin
Removed max macro to build properly, already de...
Updated project to build on new computer
Improved intro
Initial import
*** empty log message ***
Should not be here
*** empty log message ***
Some changes for 1.1.3
Intro texts
*** empty log message ***
*** empty log message ***
Improved error reporting. Changed printouts on ...
Fixed so that pause text is now drawn when in p...
Added new project file for xcode 3.0
*** empty log message ***
Added dialog on first startup to query for enab...
Bumped version to 1.1.4 in prep. for new releas...
Updated project settings in prep for 1.1.4 rele...
Prepared for 1.2
*** empty log message ***
Added missing ; which caused plist parser to fa...