自從2007年智慧型手機的普及化以來，智慧型手機的市產佔有率以及普及率逐年升高，不但智慧型手機越來越受歡迎，它所帶來的Apps也同樣受惠。擁有最大變化之一的App就是行動遊戲─從最原始的付費下載轉變成現在主流的免費增值模式。
本研究主要運用聯合分析法探討當消費者在選擇免費增值行動遊戲時，哪些屬性最吸引消費者，以提供製作公司日後參考。此研究包含兩個階段，第一階段為經由前測問卷篩選十種不同的屬性；第二階段為運用聯合分析法來產生各種不同的產品組合製作正式問卷。
結果顯示消費者選擇免費增值行動遊戲時最在意 「遊戲穩定度」、「口碑」、「遊戲獨創性」以及「遊戲畫面」(以排名表示)。本研究也同時探討消費者對擁有以上屬性的各式虛擬遊戲組合所願付的價格，以備未來付費遊戲又再次成為主流。

Ever since the introduction of smart-phones to the mass public in 2007, the market share of smart-phones has skyrocketed with each successive year, not only did smart-phones increase with popularity, but also the complementary applications. During the prominent years of the smart-phone industry, mobile gaming has also undergone drastic changes – the transition from paid mobile games to what is now called “Freemium” mobile games.
The primary purpose of this study is to discuss which attributes attracts consumers most when selecting Freemium mobile games by using the Conjoint Analysis. This research consists of two phases, the first involves filtering ten distinct attributes acquired from various literatures by using Products Attributes Theory. The second comprises of utilizing the statistics methodology of the Conjoint Analysis to construct the so-called “Cards”, which is then applied in the final questionnaire.
The results showed that consumers regard the attributes “Game Stability”, “Word-of-Mouth”, “Originality” and “Game Graphics” (in preference order) as valuable attributes toward Freemium mobile games. As an additional research, the willingness-to-pay of Freemium mobile games was also conducted, should future trends allow the dominance of paid mobile games.

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Web References
"Global Games Market Will Reach $102.9 Billion in 2017" (2014). newzoo.com, 15 May. 2014.
"List of game engines". Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc., Web. Date accessed (10 May. 2015). http://en.wikipedia.org/wiki/List_of_game_engines, 4 Sep. 2011.
Perez, Sarah (2014). "Google Play Quarterly App Revenue More Than Doubled Over Past Year, Thanks To Games, Freemium Apps" techcrunch.com, 23 Jun. 2014.
Shmilovici, Uzi (2011). "The Complete Guide To Freemium Business Models" techcrunch.com, 4 Sep. 2011.

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