The issues range from problems starting the software to lagging on even the most high-end Macs. Some users have also discovered after purchasing that SimCity for Mac will not run on machines with OS X 10.7.4 or earlier, despite a still-available FAQ entry stating that users running a minimum of Snow Leopard would be able to play the game.
Users are also finding that the game does not support the higher resolution on the 27-inch iMac or MacBook Pro, with some users forced to run the game in 1440 x 900 resolution rather than the full 2560 x 1440 that the large iMac supports. TUAW also reported that one user had to reinstall Origin three times in order to just download the game, let alone install it.
A Maxis spokesperson has commented on the issues since the game's launch:
There are a small number of players who have encountered issues with SimCity for Mac. Our live team is working individually with our players to resolve their issues and get them into the game as quickly as possible.Any SimCity gamers who are experiencing trouble can turn to the official FAQ page on EA's forums, which lists a few possible remedies. It is also worth noting that the game is covered by Origin's "Great Game Guarantee", which was launched a couple of weeks ago and allows players to return games free of charge within 24 hours of purchasing.
Update: A Maxis spokesperson issued MacRumors this statement:
We are pleased to advise that the installation-related issues some players experienced with SimCity on Mac have been resolved.