After reading this thread and trying out Update 10 please use the following links for feedback and additional questions:
Update 10 Feedback Thread - http://forum.ea.com/eaforum/posts/list/0/10023457.page
Offline additional Questions - http://forum.ea.com/eaforum/posts/list/0/10023459.page
Q: How do I play SimCity offline?
The new Single-Player Mode allows you to play SimCity anytime, anywhere, without the need of an active Internet connection. For the full details please read our blog post here - http://www.simcity.com/en_US/blog/article/simcity-offline-play-now-available-for-pc-and-mac
Q: How do I download the Single-Player Mode for SimCity?
The Single-Player Mode will be included as part of Update 10 at no additional cost. This will be available to all current and future players on PC and Mac starting March 18, 2014.
Q: Will I still require an Internet connection to play?
An Internet connection is required to download Update 10 when it becomes available on March 18, 2014. You will not require an active Internet connection to play SimCity offline in the Single-Player Mode.
Q: Can I still play the game Online?
Yes, the Online game and all of its features are still intact. This includes Multiplayer, SimCity World and Online Save Games.
Q: Will my previous Downloadable Content (DLC) be playable in the Single-Player Mode?
Yes. All of your previous DLC is available for use in both the Single-Player Mode and Multiplayer Mode.
Q: Do I need an Origin Account to play?
Yes, you use Origin to download and launch SimCity. Once you’ve installed Update 10, you can put Origin into offline mode when you are playing Single-Player Mode.
Q: How do I put Origin into Offline Mode?
To put Origin in Offline mode, log in to the Origin client and select: Origin>Go Offline
Q: Do I need to login to Origin online in order to play the Single-Player Mode?
No. If you do not have an active internet connection, you can put Origin in the offline Mode and play SimCity offline in the Single-Player Mode.
Q: What features are available in Single-Player Mode?
Single-Player Mode allows for a multi-city Single-Player experience without requiring an internet connection. All region maps are available in Single-Player Mode. Since Single-Player Mode does not require a persistent internet connection, Leaderboards, Citylog, Achievements, Friends List, Player Profile, the Region Wall, and region invites are not available in Single-Player Mode. The Global Market will be available in Single-Player Mode, but prices will be fixed.
Q: What are the requirements to play in Multiplayer mode?
The requirements to play Multiplayer have not changed. An Internet connection is required to play Multiplayer mode, Origin must be running in online mode and SimCity must be updated to the latest version.
Q: Can I transfer my regions between modes?
No. Single-Player and Multiplayer are separate modes and regions cannot be transferred between modes.
Q: Where are Single-Player regions saved?
Single-Player regions are saved locally, not on the server.
You can find your regions on PC here: \Documents\SimCity\Games\~ID NUMBER~\
You can find your regions on Mac here: Go->Documents->SimCity -> Games -> ~ID NUMBER~
Q: If I uninstall or change machines, can I transfer my Single-Player Mode regions to the new install or Machine?
If you uninstall SimCity, your saved games will still be available. However if you change machines, you will need to manually move your game files to the games file location on your new machine.
Q: Can I move my Single-Player Mode saved game from my PC to Mac and vice versa?
Yes, you can transfer your Single-Player Mode saved games between PC and Mac.
Q: How many regions can I have?
There is no limit to the number of saved regions a player can have in Single-Player Mode. The file size of your regions will vary depending on density and population of your cities.
Q: How do saves work in Single-Player Mode?
Autosave is on by default and saves your region every ten minutes. Your region is also automatically saved if you quit your region or switch to another city in the region. To disable Autosave, go to the Options menu > Settings > Gameplay tab and uncheck “Enable Autosave in Single-Player Mode”. Disabling Autosave will allow you to save at points you want to save at. If Autosave is disabled, you will be asked if you would like to save your region when you quit or switch to another city in the region.
You can manually save your region at any time by pressing “Save Game” from the options menu.
Q: How do I rollback my regions? How do I make a copy of my region?
If Autosave is disabled, you can save your region at a certain point and then experiment with your region. If you wish to go back to a previous save point, you can choose not to save your region when exiting the game. If you load that region from the main menu or resume page, it will load from the last saved point.
If you would like to make a copy of your region, press “Save As…” from the options menu. You will be prompted to name the copy of your region. This gives you the control to come up with a naming convention that works for you for your copied version. Once you submit that name, you will load the copy of the region. The original region will remain at the last saved point. You can access the original or the copy from the Main Menu in the Play tab.
Q: What cheats are available in Single-Player Mode?
Existing live cheats are available in Sandbox regions while playing Single-Player Mode. The following cheats are available in Single-Player Mode in non-Sandbox games.
Add §10,000 to City budget. Windows:
CTRL + ALT + W OS X:
CTRL + ALT + W
Add §5,000 per hour to City budget. Windows:
CTRL + ALT + S OS X:
CTRL + ALT + S
Add §100,000 per hour to City budget. Windows:
ALT + W OS X:
ALT + S
Disasters are unlocked in Single-Player Mode.