Items
All hidden items seem to have a chance to regenerate at midnight every day.
1F
Let's Go Pikachu and Let's Go Eevee Items (1F)
| Item |
Location |
Notes |
| PP Max |
In the northeastern area |
|
| Full Heal |
On the land south of the western edge of the water |
|
| Full Restore |
On the plateau west of the entrance, at the southeast corner closest to the entrance |
Hidden. |
| Max Revive |
Northwest of the eastern ladder |
|
| Max Repel |
Southwest of the northern ladder |
|
| Rare Candy |
On the plateau south of the ladders in the northwest corner |
Hidden. |
2F
Let's Go Pikachu and Let's Go Eevee Items (2F)
| Item |
Location |
| Max Lure |
Northwest of the ladders |
| Ultra Ball (5x) |
Along the southern wall |
| Rare Candy |
Northwest of the Ultra Balls |
| Full Restore |
Near the eastern wall |
| Max Revive |
Southwest of the Full Restore, near the southeastern corner |
B1F
Let's Go Pikachu and Let's Go Eevee Items (B1F)
| Item |
Location |
Notes |
| Full Restore |
Southwest of the Escape Rope, on a plateau |
|
| Escape Rope |
In the northeastern area |
|
| Max Elixir |
In the southern area |
|
| Max Revive |
North of the crystal southeast of the ladder leading to 1F |
Hidden. |
| PP Max |
On the wall north of the water west of Mewtwo's plateau |
Hidden. |
| Mewtwonite X |
Obtained from Green |
Only after defeating her. |
| Mewtwonite Y |
Obtained from Green |
Only after defeating her. |
| Poké Ball (5x) |
On the ground after defeating Green |
|
Walking Pokémon
Walking Water-type Pokémon can find Pearls, Big Pearls, or Heart Scales at the edge of the pool of water on B1F.
Walking Pokémon can find Pearls or Big Pearls in the following locations:
- 1F, from a glowing spot near the western ladder to 2F
- 2F, from a glowing spot west of the large crystal at the center
Walking Pokémon can find Stardust or Star Pieces in the following locations:
- 2F, from a glowing spot in the northeast
- B1F, from a glowing spot northeast of the central plateau
Randomly Determined Items
2F has eleven spots where hidden items can be found. All spots are 'glowing' and have a 10%-30% (depending on the spot) chance of regenerating for every 256 steps the player takes. Five of the spots yield items in the Poké Ball family, five yield Berries, and one (in front of the large crystal at the center of the floor) yields Fossils and Max Revives. The exact locations of each spot can be found here, in the 'Cerulean Cave Locations' tab. The specific chance of finding each item type is shown in the tables below.
Poké Balls
| Item |
Chance |
| Ultra Ball |
41.53% |
| Great Ball |
33.22% |
| Poké Ball |
16.61% |
| Ultra Ball (10x) |
8.31% |
| Master Ball |
0.33% |
Berries
| Item |
Chance |
| Golden Razz Berry |
50% |
| Golden Nanab Berry |
33.33% |
| Golden Pinap Berry |
16.67% |
Fossils & Max Revive
| Item |
Chance |
| Max Revive |
50% |
| Dome Fossil |
20% |
| Helix Fossil |
20% |
| Old Amber |
10% |
The following hidden items can be found on the plateau east of Mewtwo's plateau on B1F: Dome Fossils (40%), Helix Fossils (40%), and Old Ambers (20%).
