Underground
Dig treasures, stones, shards, fossils and plates out of a rock wall. It opens with the Explorer Kit from the Cinnabar Island Poké Mart.
The wall
- A wall is 13×10 tiles. Darker rock has more layers. Items hide under it in their real shapes.
- An item is yours once every tile over it is dug out. What's buried stays a surprise until you dig it up.
- Each item dug up gives 25 Underground EXP; clearing a wall gives 100. Your Underground level puts more items in each wall.
- When a wall is cleared, SEARCH for the next one (or turn on auto restart).
| Level | Items per wall | EXP to reach | Tools recover |
|---|---|---|---|
| 0 | 1–3 | 0 | 6.0% / min |
| 5 | 2–3 | 2,023 | 6.0% / min |
| 10 | 3–4 | 6,092 | 6.7% / min |
| 20 | 4–6 | 30,734 | 1080.0% / min |
| 30 | 6–8 | 130,424 | 1080.0% / min |
| 50 | 6–8 | 2,165,315 | 1080.0% / min |
Tools
Every tool has its own energy bar; using it costs part of the bar, which refills over time.
| Tool | Does | Energy per use |
|---|---|---|
| Chisel | 2 layers on one tile | 2% |
| Hammer | 1 layer on a 3×3 area | 6% |
| Bomb | 2 layers on 10 random tiles · items it digs out usually break | 18% |
| Survey | Marks an area with a treasure in it | 100% |
The bomb hits 10 random tiles; an item it digs out breaks 88% of the time. The survey marks a 5×5 area with a treasure in it (smaller as your level rises).
Battery
Breaking rock charges the battery (once a second, at most). At 60 charges, DISCHARGE it: a random move you know hits the wall in a big pattern. Stronger moves come with your Underground level and are rarer.
| Move | Level | Tier | Also needs |
|---|---|---|---|
| Eruption | 0 | 0 | |
| Hydro Cannon | 5 | 1 | |
| Dragon Breath | 10 | 2 | |
| Leaf Tornado | 10 | 2 | |
| Overdrive | 10 | 2 | |
| 10,000,000 Volt Thunderbolt | 15 | 3 | |
| Draco Meteor | 15 | 3 | |
| Heart Stamp | 15 | 3 | |
| Pokéball | 20 | 4 | 46,100 Poké Balls thrown |
| Surf | 20 | 4 | |
| Explosion | 30 | 5 | |
| Fleur Cannon | 30 | 5 | |
| Hyper Beam | 30 | 5 |
Cooldown: 1 s between charges. Higher tiers are rarer (weight 1.7^tier).
Kinds of walls
After a wall, you can search for a kind that holds only certain items. A search takes 15 minutes (shorter above level 20); a Wild Cavern right after a cleared wall is instant.
| Wall | Holds |
|---|---|
| Wild Cavern | Anything |
| Shining Hoard | Treasures (sell for diamonds) |
| Arceus' Forge | Plates (sell for gems) |
| Broken Quarry | Shards |
| Old Dig Site | Fossils |
| Stone Vein | Evolution stones |
Items
Plates
Sell one for 100 gems of its type, or trade 3 for 1 of another plate.
Draco Plate 4×3 tiles
· 100 dragon gems 
Dread Plate 4×3 tiles
· 100 dark gems 
Earth Plate 4×3 tiles
· 100 ground gems 
Fist Plate 4×3 tiles
· 100 fighting gems 
Flame Plate 4×3 tiles
· 100 fire gems 
Icicle Plate 4×3 tiles
· 100 ice gems 
Insect Plate 4×3 tiles
· 100 bug gems 
Iron Plate 4×3 tiles
· 100 steel gems 
Meadow Plate 4×3 tiles
· 100 grass gems 
Mind Plate 4×3 tiles
· 100 psychic gems 
Sky Plate 4×3 tiles
· 100 flying gems 
Splash Plate 4×3 tiles
· 100 water gems 
Spooky Plate 4×3 tiles
· 100 ghost gems 
Stone Plate 4×3 tiles
· 100 rock gems 
Toxic Plate 4×3 tiles
· 100 poison gems 
Zap Plate 4×3 tiles
· 100 electric gems 
Pixie Plate 4×3 tiles
· 100 fairy gems 
Blank Plate 4×3 tiles
· 100 normal gems Treasures
Sell them for diamonds (SELL & TRADE).
Rare Bone 6×3 tiles
· 100 diamonds 
Star Piece 3×3 tiles
· 175 diamonds 
Revive 3×3 tiles
· 70 diamonds 
Max Revive 3×3 tiles
· 140 diamonds 
Iron Ball 3×3 tiles
· 70 diamonds 
Heart Scale 2×2 tiles
· 350 diamonds 
Light Clay 4×4 tiles
· 70 diamonds 
Odd Keystone 4×4 tiles
· 200 diamonds 
Hard Stone 2×2 tiles
· 140 diamonds 
Oval Stone 3×3 tiles
· 100 diamonds 
Everstone 4×2 tiles
· 100 diamonds 
Smooth Rock 4×4 tiles
· 70 diamonds 
Heat Rock 4×3 tiles
· 70 diamonds 
Icy Rock 4×4 tiles
· 70 diamonds 
Damp Rock 3×3 tiles
· 70 diamonds Fossils
Revive them at the Cinnabar Lab, or trade 3 for 1 of another fossil.
Helix Fossil 4×4 tiles
Dome Fossil 5×4 tiles
Root Fossil 5×5 tiles
Claw Fossil 5×4 tiles
Old Amber 4×4 tiles
Evolution stones
Evolve Pokémon with them, or trade 3 for 1 of another stone.
Fire Stone 3×3 tiles
Water Stone 3×3 tiles
Thunder Stone 3×3 tiles
Leaf Stone 3×4 tiles
Moon Stone 4×2 tiles
Shards
Swap them at Shard Traders for eggs and stones, or trade 3 for 1 of another shard.
Red Shard 3×3 tiles
Yellow Shard 4×3 tiles
Green Shard 4×3 tiles
Blue Shard 3×3 tiles
Trading: 3 of one stone, shard, fossil or plate for 1 of another of the same kind. Diamonds buy things in some shops (e.g. Kris, the Day Care helper).
Underground Experts
Hire one (free, 1 at a time) and they dig for you while the game is open, without using your tools. They keep a share of what they find as payment, and you share EXP with each other (25% each way). They get faster, better with tools and better at finding their favourite kind of wall as they level up.
Bo and Dee
Loves the Shining Hoard 
Opal
Loves the Arceus' Forge 
Marigold
Loves the Broken Quarry 
Cole
Loves the Old Dig Site 
Hazel
Loves the Stone Vein | Expert level | Digs every | Keeps | Right tool | Favourite wall |
|---|---|---|---|---|
| 0 | 60.0 s | 60% | 50% | 50% |
| 10 | 49.0 s | 50% | 75% | 60% |
| 25 | 32.5 s | 35% | 100% | 75% |
| 50 | 5.0 s | 10% | 100% | 100% |
| 100 | 5.0 s | 10% | 100% | 100% |
Experts can use Restores from your bag to work faster: Large Recharge (75% of a work cycle), Medium Recharge (50% of a work cycle), Small Recharge (25% of a work cycle).