Azumanga Daioh

Omake sounds:
Successfully complete the game as any character under the normal difficulty setting.
Information in this section was contributed by obi125.

Omake background music:
Successfully complete the game with all characters under the normal difficulty setting.
Information in this section was contributed by obi125.

Omake pictures:
Complete each of the following tasks to unlock a picture for that character: successfully complete story mode under the normal difficulty setting; successfully complete sudden death mode; successfully complete story mode under the hard difficulty setting. To unlock the picture featuring all characters, successfully complete story mode under the normal difficulty setting with all eight characters.
Information in this section was contributed by obi125.

Hard difficulty:
Successfully complete the game as any character under the normal difficulty setting.
Information in this section was contributed by obi125.

Play as Yukari:
Successfully complete story mode under the normal difficulty setting as Chiyo, Kagura, Osaka, Sakaki, Tomo, and Yomi.
Information in this section was contributed by obi125.

Play as Nyamo:
Successfully complete story mode under the normal difficulty setting as Yukari without using any continues.
Information in this section was contributed by obi125.

Fight against Nyamo:
Play through story mode without losing any times to face Nyamo as the final Boss.
Information in this section was contributed by obi125.