Summertime Saga is an adult-themed visual novel game that combines elements of dating simulation, puzzle-solving, and storytelling. The game follows the protagonist, a high school student dealing with the death of his father, as he navigates complex relationships with various characters in his town. Players can build relationships with multiple characters, explore different storylines, and engage in activities ranging from casual dates to more intimate interactions. The game is known for its detailed artwork and large cast of characters, offering players a range of choices that affect the direction of the plot and the relationships they form.