So during this whole SimCity launch event, Maxis and EA have both maintained that SimCity requires a connection at all times to function and to give us offline play it would require a significant undertaking. The game is so entrenched in the cloud that bringing it offline is pretty much off the table.
Except apparently that's not true.
A trusted source came forward and revealed what really gets sent to the servers and said that bringing the game offline isn't a big deal.
http://www.rockpapershotgun.com/2013/03/12/simcity-server-not-necessary/
kotaku also found that they were able to play without a problem with their Internet off for 19 minutes.
http://kotaku.com/5990165/my-simcity-city-thrived-offline-for-19-minutes




















