Pokémon Pokopia: Mysterious Slate — All 28 Locations & Unown Puzzle
Quick Answer:
There are 28 Mysterious Slates hidden across the game world. Dig glowing yellow soil patches with Rock Smash to find them. Take them to the Unown wall behind the Withered Wasteland Pokemon Center (break the cracked cliff with Rock Smash). Press ZL to rotate each slate to see the Unown letter on the back, then match it to the correct slot. Completing all 28 unlocks Mew.
How Mysterious Slates Work
Finding Slates
Look for glowing yellow soil patches throughout the world. Use Rock Smash on them. You may find fossils, Lost Relics (CDs), or Mysterious Slates.
Reading the Slate
Open your inventory, select a Mysterious Slate, and press ZL to rotate it. The back of each slate has an Unown letter carved into it.
The Unown Wall
Behind the Pokemon Center in Withered Wasteland, find a cliff with light brown cracks. Rock Smash it to reveal an underground tunnel with a massive wall featuring 28 Unown letter slots.
Placing Slates
Match each slate's Unown letter to the correct slot on the wall. A chime sound confirms correct placement.
Final Reward: Mew
After placing all 28 Mysterious Slates correctly, a hidden animation plays. Mew appears from the completed mural and is automatically recorded in your Pokedex. This is the only way to encounter Mew in Pokémon Pokopia.
Slate Distribution by Region
Slates are distributed across all regions. Focus on glowing yellow dig spots — not every spot contains a slate, but persistence pays off.
| Region | Estimated Slates | Tips |
|---|---|---|
| Withered Wasteland | 6-8 | Check around the Pokemon Center and cave areas |
| Bleak Beach | 5-7 | Sandy areas near S.S. Anne wreckage |
| Rocky Ridges | 5-7 | Mine cart tracks and cave interiors |
| Sparkling Skylands | 5-7 | Construction debris areas |
| Dream Islands | 2-3 | Rare spawns on various island types |
Use a Pokemon with the Search specialty + Dowsing Machine for higher discovery rates.
FAQ
Q: Can I miss any slates permanently?
No. Glowing dig spots respawn over time, so you can always find more slates. However, each unique slate only needs to be found once.
Q: Do I need all 28 to get Mew?
Yes, all 28 unique Unown letters must be placed to trigger the Mew encounter.