Note: This game is also titled Tantei Jinguuji Saburo DS: Inishie No Kioku.
At the main menu, select the "Password" option. Then, enter one of the following passwords at the typewriter to unlock the corresponding cheat option:
- What is a password? (unlockable #1)
Enter "AAAA" as a password.
- Picture Gallery (unlockable #2)
Enter "LEET" as a password.
- Movies (unlockable #3)
Enter "ROSE" as a password.
- Picture Gallery (unlockable #4)
Enter "CARS" as a password.
- Visuals 02 (unlockable #5)
Enter "GONG" as a password.
- Sound Player (unlockable #6)
Enter "BIKE" as a password.
- Hints (unlockable #7)
Enter "HINT" as a password.
- Picture Gallery (unlockable #2)
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