Phase 7 section
Pokemon Yellow Cinnabar Island and Pokemon Mansion Walkthrough
Cinnabar Island and Pokemon Mansion section for the Pokemon Yellow walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.
Revive fossils, complete lab trades, explore Pokemon Mansion, and find the Secret Key. This page is a standalone section for Phase 7: Volcano Badge, with source-backed Yellow encounter, trainer, item, hidden item, and boss data.
Source maps
Cinnabar Island, Cinnabar Lab, Cinnabar Lab Trade Room, Cinnabar Lab Metronome Room, Cinnabar Lab Fossil Room, Pokemon Mansion 1F, Pokemon Mansion 2F, and Pokemon Mansion 3F, and 1 more map files.
Wild rows29 Trainers6 Items14
Route plan
Pokemon Mansion has Yellow-specific Rattata, Grimer, Muk, and Ditto encounter tables plus several valuable TMs. The Secret Key on B1F opens Blaine's Gym.
Wild Pokemon
Each area below has its own table, split into encounter method bands: tall grass / cave floor, Surfing, the three rods, then gift, trade, prize, and static rows. Grass and Surf rows merge every Gen I wild slot for a species and show the combined odds out of 256 (slot rates 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256). Generation I has no time-of-day split, so no rate varies with the clock; a — note means the row needs nothing beyond reaching the area.
Pokemon Mansion 1F
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| Tall grass / cave floor | |||
 Rattata | 34-37 | 30% | — |
 Raticate | 34-37 | 30% | — |
 Grimer | 23-26 | 20% | — |
 Growlithe | 26-38 | 20% | — |
Pokemon Mansion 2F
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| Tall grass / cave floor | |||
| Grimer | 26-35 | 35% | — |
| Rattata | 37-40 | 30% | — |
| Raticate | 37-40 | 30% | — |
 Muk | 35-38 | 5.5% | — |
Pokemon Mansion 3F
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| Tall grass / cave floor | |||
| Grimer | 32-38 | 35% | — |
| Rattata | 40-43 | 30% | — |
| Raticate | 40-43 | 30% | — |
| Muk | 38-41 | 5.5% | — |
Pokemon Mansion B1F
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| Tall grass / cave floor | |||
| Grimer | 35-38 | 40% | — |
| Raticate | 37-46 | 40% | — |
 Ditto | 12-24 | 11% | — |
| Muk | 41 | 9.8% | — |
Cinnabar Island
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| Fishing — Old Rod | |||
 Magikarp | 5 | 100% | Any fishable water tile. |
| Fishing — Good Rod | |||
 Goldeen | 10 | 50% | Any fishable water tile after getting Good Rod. |
 Poliwag | 10 | 50% | Any fishable water tile after getting Good Rod. |
| Fishing — Super Rod | |||
 Staryu | 15 | 25% | Yellow Super Rod slot table. |
 Tentacool | 15 | 25% | Yellow Super Rod slot table. |
| Staryu | 10 | 25% | Yellow Super Rod slot table. |
| Tentacool | 30 | 25% | Yellow Super Rod slot table. |
Cinnabar Lab Fossil Room
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| Fossil revival | |||
 Aerodactyl | 30 | Old Amber | Bring Old Amber from Pewter Museum to the Cinnabar Lab. |
 Kabuto | 30 | Dome Fossil | Revive the Dome Fossil if you chose it in Mt. Moon. |
 Omanyte | 30 | Helix Fossil | Revive the Helix Fossil if you chose it in Mt. Moon. |
| In-game trade | |||
| Muk | Traded | Gift | Trade Kangaskhan for Muk (STICKY). Fossil room trade; trade Kangaskhan for Muk. |
Cinnabar Lab Trade Room
| Pokémon | Levels | Rate | Notes |
|---|---|---|---|
| In-game trade | |||
 Rhydon | Traded | Gift | Trade Golduck for Rhydon (BUFFY). Trade room NPC; trade Golduck for Rhydon. |
 Dewgong | Traded | Gift | Trade Growlithe for Dewgong (CEZANNE). Trade room NPC; trade Growlithe for Dewgong. |
Trainers
| Route order | Trainer | Team | Reward | Optional / rematch note |
|---|---|---|---|---|
| 1. Pokemon Mansion 1F (17, 17) |  ScientistParty #4 | $1,450 | One-time trainer; no rematch in Yellow. | |
| 2. Pokemon Mansion 2F (3, 17) |  BurglarParty #7 | $3,060 | One-time trainer; no rematch in Yellow. | |
| 3. Pokemon Mansion 3F (5, 11) | BurglarParty #8 | $3,420 | One-time trainer; no rematch in Yellow. | |
| 4. Pokemon Mansion 3F (20, 11) | ScientistParty #12 | $1,650 | One-time trainer; no rematch in Yellow. | |
| 5. Pokemon Mansion B1F (16, 23) | BurglarParty #9 | $3,060 | One-time trainer; no rematch in Yellow. | |
| 6. Pokemon Mansion B1F (27, 11) | ScientistParty #13 | $1,700 | One-time trainer; no rematch in Yellow. |
Items And Hidden Items
| Item | Type | Area / direction | Coordinate | Requirement |
|---|---|---|---|---|
| Escape Rope | Visible item ball | Visible item ball at (14, 3) in Pokemon Mansion 1F. | (14, 3) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Carbos | Visible item ball | Visible item ball at (18, 21) in Pokemon Mansion 1F. | (18, 21) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Calcium | Visible item ball | Visible item ball at (28, 7) in Pokemon Mansion 2F. | (28, 7) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Max Potion | Visible item ball | Visible item ball at (1, 16) in Pokemon Mansion 3F. | (1, 16) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Iron | Visible item ball | Visible item ball at (25, 5) in Pokemon Mansion 3F. | (25, 5) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Rare Candy | Visible item ball | Visible item ball at (10, 2) in Pokemon Mansion B1F. | (10, 2) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Full Restore | Visible item ball | Visible item ball at (1, 22) in Pokemon Mansion B1F. | (1, 22) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| TM14 Blizzard | Visible item ball | Visible item ball at (19, 25) in Pokemon Mansion B1F. | (19, 25) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| TM22 Solarbeam | Visible item ball | Visible item ball at (5, 4) in Pokemon Mansion B1F. | (5, 4) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Secret Key | Visible item ball | Visible item ball at (5, 13) in Pokemon Mansion B1F. | (5, 13) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Moon Stone | Hidden item | Hidden on the searchable tile at (8, 16) in Pokemon Mansion 1F. | (8, 16) | Press A on the hidden tile or use the Itemfinder nearby. |
| Max Revive | Hidden item | Hidden on the searchable tile at (1, 9) in Pokemon Mansion 3F. | (1, 9) | Press A on the hidden tile or use the Itemfinder nearby. |
| Rare Candy | Hidden item | Hidden on the searchable tile at (1, 9) in Pokemon Mansion B1F. | (1, 9) | Press A on the hidden tile or use the Itemfinder nearby. |
| TM35 Metronome | Gift | Talk to the scientist in the Cinnabar Lab. | - | Talk to the scientist in the Cinnabar Lab. |
Boss Strategy
No boss or Rival branch is attached to this section.
Completion Checklist
- Revive fossils or Old Amber.
- Collect Mansion TMs and hidden items.
- Find the Secret Key.
- Verify the Yellow encounter rows before leaving if you are filling the Pokedex.
- Use the item rows as a visible-item and hidden-item sweep before moving to the next section.
Sources
pret/pokeyellow: wild encounters, trainer parties, trainer money, map object events, hidden event items, rods, trades, and prize Pokemon.- Encounter odds aggregate the Gen I ten-slot rates: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256.
- Yellow is a single-game guide with no day/night encounter split; each area table groups species under method bands with Levels, Rate, and Notes columns.