Ao Oni 3.0 [updated] May 2026

I think you’re referring to Ao Oni 3.0 (a fan-made or updated version of the classic horror RPG Ao Oni) and specifically the “Helpful Paper” item.

4. Reworked Puzzles

Classic puzzles (like the piano, the medicine cabinet, and the golden lever) are present but modified. Several solutions have been randomized per playthrough, which destroys the ability to use a static walkthrough. A notorious new puzzle involves aligning four mirrors to reflect moonlight, all while the Oni patrols the room. ao oni 3.0

• Engine Update: The game has been ported to a newer engine, fixing old lag issues and making it compatible with modern Windows systems.
• Rebalancing: Some of the more frustrating puzzles and chase sequences have been tweaked for better game flow.
• Visuals: While keeping the classic RPG Maker aesthetic, sprites and environments have been cleaned up.
• Content: There are slight additions to the story lore and new "bad endings" to discover.

Piano Puzzle: Locate two pieces of paper to decipher a password from the piano keys. Use the code "459" found on the piano to unlock the kitchen safe. I think you’re referring to Ao Oni 3