PurposeThe purpose of this paper is to understand the antecedents of peer recommendations (generating positive word-of-mouth and recruiting others) in the context of mobile social games.Design/methodology/approachDrawing on the needs–supplies fit framework and social identity theory, this paper proposes that game design characteristics (challenge, fairness, innovativeness and ease of use) influence game identification, which further predicts word-of-mouth (WOM) generation and recruitment intention. This paper further suggests fits between gamer orientation (passing time and seeking achievements) and game design lead to enhanced game identification. The model was tested using data from an empirical survey with 767 mobile social gamers.FindingsGame challenge, game fairness, game innovativeness and ease of use are positively associated with game identification, whereas game identification positively predicts WOM generation and recruitment intention. Achievement-seeking use was found to enhance the effects of game challenge and game fairness on game identification, and passing time use was found to strengthen the effects of game innovativeness and ease of use on game identification.Research limitations/implicationsThe findings of this study provide operable implications to facilitate peer recommendations in a mobile gaming context. The model was only tested within the context of mobile social games, however, so caution is advised when generalizing the findings to other game subgenres.Originality/valueThis study distinguishes itself from other peer recommendation studies by taking recruitment, a more straightforward and salient form of peer recommendation, into account. This paper enriches theory by investigating the antecedents and consequences of game identification. This study clarifies the underlying mechanism of how game design influences peer recommendations and examines the interactions between game design and gamer orientation.