A smart hacker/modder has been able to access SimCity’s debug mode that allows you to play the game offline.
A Reddit user called UKAzzer posted the following information on his experience:
You can edit the highways ANYWHERE – even outside of your city boundary,” UKAzzer said, “and even if you quit the game and log back in later, it’s all saved safely on the server.
“This shows that highway editing will be easily possible, AND that editing outside of the artificially small city boundaries should be very viable too.”
EA and Maxis suffered heavily due to the launch of SimCity. The game was unplayable because you had to be connected online all of the time. A further unconfirmed report says EA released a patch that closed access to the offline play that UKAzzer experienced.
The following video shows what you can do: