Key pieces appear in Big Walk’s build as a world-object family, and are treated by the wiki as likely progression-related objects for the walk’s larger puzzles.
What is confirmed
- Key pieces exist as a named family in the build’s world-object references.
- They are grouped with gourd and radio-style objects in the activity layer.
- Their design language (piece-like, collectible) points toward multi-step puzzles.
What is still unknown
- Whether key pieces are required to reach the ending, optional collectibles, or both.
- How many pieces exist and where they spawn.
- Whether they are shared group progress or per-player.
The “progression” reading is an inference from build evidence, not a tested fact. Treat mechanics as unverified until reproduced in a released session.