在CityVille正式登陆Facebook社交网站的第四日，Zynga公司宣布该游戏的发布是有史以来最为成功的一次。据Zynga公司数据显示，在游戏发布后的24小时内，cityVille吸引了29万用户参与，其中25%用户的游戏时间还超过了15分钟，足以获得进入朋友城市的特权。

尽管CityVille发布首日的出色表现并不具有实质的重要性。然而，Zynga今年4月和6月分别发布的两款社交游戏：Treasure Isle和FrontierVille的的初始发展速度并不如CityVille，但之后该两款游戏的增长十分迅速。

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由上图看来，CityVille的增长速度极有可能超越FrontierVille。同时，注意到Treasure Isle自发布第六日起用户数量骤然上升趋势。仅仅一个月内，Treasure Isle的月活跃用户数达到了高峰期的2700万。

然而，Treasure Isle的快速增战难与再现，这是因为Facebook社交网站在该游戏发布的同月对病毒式传播渠道进行了大幅调整。针对CityVille目前的发展情况，Zynga公司表示目前CityVille还处于初步原始增长，并没有添加任何广告宣传因素。

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为了造就CityVille的初步成功，Zynga公司投入了大量的技术支持。游戏邦注意到自CityVille发布首日起，该游戏就启动了email战略，要求玩家邀请FarmVille好友一起加入CityVille。此外游戏中聘请朋友到“政府部门”任职等社交机制也增加朋友之间的邀请和互动。

作为社交游戏巨头公司，Zynga的跨游戏宣传能力可谓是所向披靡，其他社交游戏开发公司很难在规模上与之相匹敌。目前，就CityVille的发展来看，该游戏更像是为下轮社交游戏之战充当了模板作用。（本文为游戏邦/gamerboom.com编译，转载请注明来源：游戏邦）

Four days after opening CityVille on Facebook, Zynga is calling the new game its biggest-ever launch. Some 290,000 people played the title in its first 24 hours, according to the Zynga, with 25 percent continuing long enough to set up a franchise in a friend’s city, an action that takes at least 15 minutes of game play.

CityVille’s first-day performance is only important in context, though. Zynga had two other major releases this year: Treasure Isle and FrontierVille, in April and June respectively. Both games had slower starts than CityVille, followed by rapid growth:

It does look like CityVille’s growth will continue to surpass FrontierVille, from this early vantage point. However, note the hockey-stick growth that Treasure Isle enjoyed beginning on its sixth day in the wild; it’s unlikely that CityVille will be able to surpass those gains, which left Treasure Isle at its peak of 27 million monthly active users after just one month.

Treasure Isle can’t necessarily be repeated, since Facebook made some of its biggest viral channel changes the same month that game was launched. As for CityVille, Zynga tells TechCrunch that its growth is primarily organic, not from advertising.

The list of techniques Zynga used to create CityVille’s early growth spurt would likely be quite long, but as we noted on its first day out, it includes email campaigns and inciting new players to invite their friends over from FarmVille. There are also social mechanics like staffing your government buildings with friends, which helps push out invites and interaction between players. Our preview lists more, including an in-game economy that creates money and goods from connections.

Zynga’s cross-promotional abilities can’t be rivaled by any competitor — it’s simply too large in comparison to others — but given CityVille’s growth so far, the title will likely serve as a template for the next round of new social games.

The historical data on the chart above comes from AppData Pro, our subscription data service, which also offers breakdowns by age, gender and country for large apps, along with other metrics. （Source:Inside Social Games）