When you quit the game, the current position is automatically saved so you can continue playing later.

当你离开游戏的时候，当前的位置自动地被保存所以你能够继续过后玩。

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While many people start playing a social game but later get bored and quit after a few weeks or maybe months, Meteor Games is designing its games to have much more content, narrative and strategy so that people will play for 12 to 24 months.

FORBES: How Meteor Games Competes With The Zyngas Of Social Gaming