Little Busters! The gameplay in "Little Busters!" follows a branching plot line which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the six female main characters by the player character, which increases to nine in "Ecstasy". There are additional minigames added into the gameplay, such as battle sequences that resemble fighting games or baseball batting practice, which serve to give the characters experience, obtain accessories to use during battle, and improve their statistics. Both "Little Busters!" and "Ecstasy" ranked as the best-selling PC game sold in Japan for the time of their release, and "Ecstasy" would go on to sell over 100,000 units. Key went on to produce an adult spin-off called "Kud Wafter" in June 2010, which expanded on the scenario of Kudryavka Noumi, one of the heroines from "Little Busters!" and "Ecstasy". There have been 14 manga adaptations based on "Little Busters!" and "Ecstasy" published by ASCII Media Works, Kadokawa Shoten and Ichijinsha. Comic anthologies, light novels and art books were also published, as were several music albums. There have been two Internet radio shows hosted by the voice actors of Rin and Kyousuke Natsume and Kudryavka Noumi. J.C.Staff produced two anime television series and an original video animation series between 2012 and 2014. "Little Busters!" is a romance visual novel in which the player assumes the role of Riki Naoe. Much of its gameplay is spent on reading the story's narrative and dialogue. The text in the game is accompanied by character sprites, which represent who Riki is talking to, over background art. Throughout the game, the player encounters CG artwork at certain points in the story, which take the place of the background art and character sprites. When the game is completed at least once, a gallery of the viewed CGs and played background music becomes available on the game's title screen. "Little Busters!" follows a branching plot line with multiple endings, and depending on the decisions that the player makes during the game, the plot will progress in a specific direction. There are seven main plot lines that the player will have the chance to experience. Throughout gameplay, the player is given multiple options to choose from, and text progression pauses at these points until a choice is made. To view all plot lines in their entirety, the player will have to replay the game multiple times and make different choices to further the plot to an alternate direction.