If you get a "Developer cannot be verified" error, right-click the app and select Open while holding the Option key.
Note: The Intel Mac suffers due to thermal throttling and poor OpenGL drivers. wow 1121 client mac
Since you cannot simply double-click the old .app file on a modern Mac, you must use a compatibility layer or virtualization. If you get a "Developer cannot be verified"
On an M1 or M2 MacBook Pro, the 1121 client runs at 200-300+ FPS via Whisky. The overhead is negligible. wow 1121 client mac