1）移动市场调研公司AppsFlyer日前发布的报告显示，Android用户在手机游戏中的逗留时间短于iOS用户，视频广告能够有效吸引用户长时间体验手机游戏。

AppsFlyer对比了视频广告（一般是由广告网络植入应用内部的广告）、社交广告、非视频广告和其他应用内广告的效能，指出iOS游戏中的视频广告留住玩家的概率比其他类型的广告多130%。此类广告有80%的时间在Android设备上表现优于其他广告。

AppsFlyer指出对于手机应用来说，视频广告是一种很棒的广告形式。优秀的视频预告片可以展示游戏玩法、图像、行动等，比基于文本的广告或静态图像更能够突出应用特点。这就意味着用户更有可能对应用产生兴趣并愿意在其中逗留，以便看到更多内容。

ios-games-vs-android-games(from AppsFlyer)

报告指出，iOS用户在游戏中逗留30天的概率比Android用户高72%。

从各个广告平台的表现情况来看，iOS玩家首天留存率最高的是Vungle，而非谷歌、Facebook和Twitter等超级平台；7天、30天留存率表现最优的是AppLovin。而在Android设备上，玩家第一天、第7天和第30天留存率最高的均是AdColony。

但这并不意味着这些广告平台能够最有效地推动游戏下载量，Facebook才是推动iOS和Android应用下载量方面表现最优的平台，其次是Chartboost，第三名是AppLoving（iOS平台）和Mobvista（Android平台），之后则是Google Adwords。

retention-index-ios-games(from AppsFlyer)

该报告还显示，整体来看所有广告网络第1天至第7天留存率平均下降56%，第7天至第30天平均下降80%。

2）据Siliconera报道，日本大分监狱有一群老年囚犯使用任天堂DS设备来锻炼脑力，以防止老年痴呆症。

老年痴呆是该监狱一个严重的问题，有21%的同住囚犯年龄超过65岁。鉴于全世界囚犯年龄增长的情况，游戏可成为保持这类人群大脑活跃性的一种有效方法。

elder playing games(from news.52pk.com)

大分监狱的这些老年囚犯除了玩任天堂DS上的脑力训练游戏，还要做一些瑜珈和拉伸运动。典狱官表示他希望这些囚犯出狱后可以继续使用任天堂DS等资源来保持良好生活习惯。

3）据venturebeat报道，问答游戏《QuizUp》即将以专注于社交网络的形式发布新应用和网站。该游戏开发商Plain Vanilla Games（冰岛工作室）成立于2013年，已融资2770万美元，打算借此建立用户之间的社交联系，并利用这款新应用创造基于话题的用户社区，并添加跨平台功能，意在增加其3300万全球用户的粘性。

QuiZup(from app.91.com)

这款重新设计的QuizUp应用包含粉丝模式，话题标签系统等支持用户在1200多个以上的问题以及60多万个回答之间进行导航，其主页标签允许其他用户关注玩家及其最喜爱的话题。

4）据venturebeat报道，亚马逊游戏工作室日前又发布了一款游戏《Til Morning’s Light》（第三人称动作冒险游戏，支持运行于亚马逊Fire和iOS设备）。

Till Morning’s Light(from hao76.com)

该游戏是亚马逊游戏工作室与WayForward联合制作，后者曾开发过《Shantae》系列、《Ducktales Remastered》等2D横向卷轴游戏。（游戏邦注：亚马逊之前曾与Human Head Studios合作开发了恐怖求生游戏《Lost Within》。）这款新游戏与之前的《Lost Within》一样采用无微交易选项的付费模式，售价为7美元。（本文由游戏邦编译，转载请注明来源，或咨询微信zhengjintiao）

1）Video ads keep mobile gamers playing longer, AppsFlyer finds

Heather Newman

Enterprise companies tackle mobile marketing automation slightly differently—and that’s why they’re on top. Register today for this free VB Insight webinar with AEG’s VP of Social and Marketing on May 28th.

Android players stick with their games for a shorter period of time than those on iOS, and video ads are the best way to attract people who will play longer on mobile platforms, AppsFlyer said in a new report.

The mobile market research company released its first Gaming Ad Network Performance Index today, covering over 50 million paid installs of hundreds of gaming apps, running campaigns on hundreds of ad network partners.

Among other findings, the report compares video ads, typically presented in-app by an ad network, versus social, non-video, and other in-app ads. Video ads were 130 percent more likely to keep players for a longer time in iOS games, the report said. They performed better than the rest 80 percent of the time on Android devices.

“Video is a great ad format for mobile apps because it allows the user to see the app in action,” AppsFlyer chief executive Oren Kaniel said. “A good video trailer shows off the gameplay, the graphics, the movements, etc., and does a much better job of highlighting what an app is really like than any text-based ad or static graphic ever could.”

That in-depth exposure to gameplay means users are more interested and more likely to stick around when they tap to see more, he said.

The study also showed that players on iOS platforms were 72 percent more likely to stay for 30 days and beyond than those on Android hardware.

“Most iOS devices are high-end and relatively costly, while Android devices have a significant variance among them with a multitude of manufacturers and models that run on Google’s mobile OS,” Kaniel said. “This explains why studies have consistently shown that iOS users are, on average, more affluent and tech savvy, which in turn is translated into higher engagement, revenue, average order value, retention and other qualitative parameters. Our research shows that the iOS games vertical is no exception.”

AppsFlyer ios games vs android games

Above: An AppsFlyer chart showing how well ads convinced gamers to stick around on iOS and Android ad networks.

The study offers details on whose networks win for attracting gamers who stay. Surprisingly, big names like Google, Facebook, and Twitter are not at the top of the list. On iOS, Vungle showed the best one-day retention (that is, players who opened their games more than once after downloading) while AppLovin was most likely to attract players that were still around after seven and 30 days, the report said. For Android, the retention winner across the board at one, seven, and 30 days was AdColony.

That doesn’t mean that these vendors were the best at flat-out attracting downloads; that’s power, not retention, and Facebook leads the way there on both iOS and Android, the report said. Chartboost was second on both platforms, followed by AppLoving on iOS and Mobvista on Android, then by Google Adwords on both platforms.

The study said that, on average, the drop in retention across all networks between the first day and day seven is 56 percent; the drop between day seven and day 30 is 80 percent.（source：venturebeat）

2）Elderly Japanese prisoners are playing Nintendo DS to help combat dementia

Dan Crawley

Games aren’t just for fun — they can have serious applications, too.

A group of elderly prisoners in Oita Prison, Japan, are using Nintendo DS consoles to help keep their brains in shape. Dementia is a serious issue at the prison, where 21 percent of the inmates are over 65, reports Siliconera. As prison populations worldwide get older, gaming is one way to help keep prisoners mentally active despite their incarceration.

Along with playing brain training games on the Nintendo DS, prisoners at Oita are also taking part in yoga and stretching exercises. The DS games are proving the most popular part of the program, though, with one inmate — imprisoned for fraud — saying, “The DS is the most fun part. I want to keep my brain sharp by practicing like this.”

The warden at the prison says that he hopes the prisoners will continue to use resources like the Nintendo DS when they get released. Seems they should take note of the 100-year-old Nintendo DS fan we reported on a few years back.（source：venturebeat）

3）Mobile trivia game QuizUp relaunches as a social media network

Dale North

Enterprise companies tackle mobile marketing automation slightly differently—and that’s why they’re on top. Register today for this free VB Insight webinar with AEG’s VP of Social and Marketing on May 28th.

As strange at is sounds, a mobile quiz game is evolving into a website.

QuizUp moves into a second generation for its mobile trivia game, and it will relaunch through a new app and website with a focus on social networking. The Reykjavik, Iceland-based Plain Vanilla Games was founded in 2013 and has raised $27.7 million in total funding. It aims to build social connections between its users, and it has shaped the new app to encourage the growth of topic-focused communities, adding cross-platform functionality between mobile and desktop. This should help the company grow engagement beyond its 33 million worldwide users and 7 million daily plays.

QuizUp is available for free on iOS and Android platforms, and the QuizUp.com website is open now.

This retooled QuizUp sees new design and functionality, including a follower model, a home feed, and a topics tab system that lets users navigate through more than 1,200 quiz topics and 600,000 questions. A home tab lets others follow player profiles and preferred quiz topics, and a new interface was designed around exploration and networking. The company hopes to build communities based on topics of interest from its pool of players through this relaunch.

“We’re the first mobile gaming app to put a huge emphasis on social interaction,” Thor Fridriksson, founder & CEO of QuizUp, said to GamesBeat in a statement. “The goal of the New QuizUp is to connect people through shared interests. QuizUp will always be a place that sparks friendly competition, but as it evolves it is also a place to meet new people and connect with users around the globe that have the same interests as you.”（source:venturebeat）

4）Amazon Game Studios releases Wayforward’s Til Morning’s Light on Fire and iOS

Mike Minotti

Amazon Game Studios is releasing another game with help from a notable developer.

The game is Til Morning’s Light, a third-person action-adventure for Amazon Fire and iOS devices. It combines rhythm-based combat and puzzle solving to tell the story of a girl stuck in a haunted mansion.

Til Morning’s Light was co-developed by WayForward, a studio best known for 2D sidescrollers like the Shantae series, Ducktales Remastered, and A Boy and his Blob. Amazon Game Studios previously worked with Human Head Studios to create Lost Within, a survival-horror game.

While most mobile developers focus on free-to-play games with microtransactions, Amazon Game Studios has released premium games with the help of notable developers, like Human Head and WayForward. Both Lost Within and Til Morning’s Light cost $7 and have no micro-transactions.（source：venturebeat）