Girl Friend Beta (ガールフレンド（仮）, Gāru Furendo Kakko Kari, literally "Girlfriend (provisional)") is a 2012 Japanese smartphone game developed by CyberAgent for iOS and Android devices. As of June 2014, it has over 5.3 million users. An anime television series produced by Silver Link aired in Japan between October and December 2014. There are also five manga adaptations based on the game, and a PlayStation Vita spin-off game was released in November 2015. The game is a dating simulator which features over 100 different virtual girls, each with a unique voice actress. The player progresses their relationship with the virtual girlfriend by taking her on dates. The game is free-to-play, however the player pays real-world money to gain premium services. The game features various events that occur, including battle events when bad guys appear. The player can engage in club activities and school class events to solicit romance and increase intimacy with female students. There is a card-based system within the game, where the player collects different cards of varying rarity; each card has different attributes, such as attack and defense costs. Cards can be enhanced by engaging in a part-time job.