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.
Source: Wikipedia, "[en.wikipedia.org/wiki/Little_Busters%21 Little Busters!]", available under the CC-BY-SA License.