Gameplay
Popotan is a visual novel in which players spend most of their time in reading dynamic text, representing either dialogue between the various characters or the inner thoughts of the protagonist. After progressing through text, players either come to a "decision point" where they must choose from multiple options, or the text will end and the player must move to a new location, or, in the DVD-ROM and PS2 versions, use a shortcut option to continue to the next event. Time elapsed between decision points varies. The game pauses at these points and, depending on which choice the player makes, the plot will progress and may branch off in a specific direction. The player must romantically pursue the three sisters, and can seek other characters if one of the sisters' scenarios has been completed.
A special music mini-game commences at certain points in Mii's scenario. The goal of the mini-game is to max out "Magical Girl Mii"'s magical power meter by hitting balls at the right moment. The outcome of the mini-game affects the storyline. Successfully completing her scenarios unlock an omake option on the main menu, allowing the player to play the mini-game with different music tracks. Finishing Ai's scenario unlocks a new story featuring Unagi. The player can save the game only while text is on the screen in the PC versions; this limitation was removed in the PS2 port. The PS2 port also altered the events and scenes based on the DVD version.
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