Reading devices such as the Amazon Kindle, Kobo Glo and Nook GlowLight have surged in popularity over the past few years as well as other handheld devices that have eBook reading capabilities like the Apple iPad. (amyharrop.com)
With few other gaming options available (Game Boy and other handheld devices excluded), it is safe to assume that the industry peaked with those units. (benzinga.com)
Examples of casual game play would include playing at work over lunchtime and playing on an iPhone or other handheld device whenever a gamer has free time. (download-free-games.com)