Paperization is a unique mechanic that allows Mario to flatten parts of the environment or turn real-world objects into 'Thing' stickers. Press 'Y' when prompted to enter Paperization mode.

Key Uses of Paperization:
- Solving Puzzles: You'll often need to cut out a section of the background to reveal a hidden path or place a 'Thing' sticker to solve a puzzle.
- Obtaining Thing Stickers: When you find a real-world object (e.g., a Fan, a Hair Dryer), you must Paperize it to turn it into a usable 'Thing' sticker.
- Revealing Secrets: Sometimes, Paperizing a specific area will reveal hidden blocks or passages.
Always be on the lookout for objects that seem out of place or areas with a distinct outline in the environment. These are often prime candidates for Paperization. Remember that once a 'Thing' is turned into a sticker, it's gone from the environment, so plan your usage carefully.