Cerulean Cave

Home

Kanto Locations Home

RGBY (Japanese) RBY (Western)

Cerulean Cave

Access to:
Exit on 1F: Cerulean City

Utility:
Surf is required to access this area, as well as navigate it.

Pokémon

Walking

1F

Combined (Compressed)
Pokémon		Red	Green	Blue	Yellow
	Golbat	20% 46	20% 46	20% 46	40% 50, 55
	Hypno	20% 46	20% 46	20% 46	N/A
	Magneton	15% 46	15% 46	15% 46	N/A
	Dodrio	10% 49	10% 49	N/A	N/A
	Venomoth	10% 49	10% 49	10% 49	5% 54
	Arbok	10% 52	N/A	N/A	N/A
	Kadabra	5% 49	5% 49	5% 49	N/A
	Parasect	5% 52	5% 52	5% 52	5% 54
	Raichu	4% 53	4% 53	4% 53	N/A
	Ditto	1% 53	1% 53	1% 53	5% 55, 60
	Sandslash	N/A	10% 52	10% 52	10% 52
	Rapidash	N/A	N/A	10% 49	N/A
	Graveler	N/A	N/A	N/A	15% 45
	Gloom	N/A	N/A	N/A	10% 55
	Weepinbell	N/A	N/A	N/A	10% 55

2F

Combined (Compressed)
Pokémon		Red	Green	Blue	Yellow
	Dodrio	20% 51	20% 51	20% 51	N/A
	Venomoth	20% 51	20% 51	20% 51	N/A
	Kadabra	15% 51	15% 51	15% 51	N/A
	Rhydon	10% 52	10% 52	10% 52	5% 58, 60
	Marowak	10% 52	10% 52	N/A	N/A
	Electrode	10% 52	10% 52	10% 52	N/A
	Chansey	5% 56	5% 56	5% 56	N/A
	Wigglytuff	5% 54	5% 54	5% 54	N/A
	Ditto	5% 55, 60	5% 55, 60	5% 55, 60	10% 60
	Raticate	N/A	N/A	10% 52	N/A
	Golbat	N/A	N/A	N/A	40% 52, 57
	Graveler	N/A	N/A	N/A	15% 50
	Sandslash	N/A	N/A	N/A	10% 56
	Rhyhorn	N/A	N/A	N/A	10% 50
	Gloom	N/A	N/A	N/A	5% 58
	Weepinbell	N/A	N/A	N/A	5% 58

B1F

Combined (Compressed)
Pokémon		Red	Green	Blue	Yellow
	Rhydon	20% 55	20% 55	20% 55	10% 62
	Marowak	20% 55	20% 55	20% 55	N/A
	Electrode	15% 55	15% 55	15% 55	N/A
	Chansey	10% 64	10% 64	N/A	5% 56
	Parasect	10% 64	10% 64	10% 64	N/A
	Raichu	10% 64	10% 64	10% 64	N/A
	Arbok	5% 57	N/A	N/A	N/A
	Ditto	10% 63, 65, 67	10% 63, 65, 67	10% 63, 65, 67	15% 60, 65
	Sandslash	N/A	5% 57	5% 57	N/A
	Clefairy	N/A	N/A	10% 64	N/A
	Golbat	N/A	N/A	N/A	40% 54, 59
	Graveler	N/A	N/A	N/A	15% 55
	Rhyhorn	N/A	N/A	N/A	10% 52
	Lickitung	N/A	N/A	N/A	5% 50, 55

Fishing

1F

Combined (Compressed)
Pokémon		Rod	Red	Green	Blue	Yellow
	Magikarp	Old	100% 5	100% 5	100% 5	100% 5
	Goldeen	Good	50% 10	50% 10	50% 10	50% 10
	Poliwag	Good	50% 10	50% 10	50% 10	50% 10
	Slowbro	Super	25% 23	25% 23	25% 23	N/A
	Seaking	Super	25% 23	25% 23	25% 23	60% 35, 45, 55
	Kingler	Super	25% 23	25% 23	25% 23	N/A
	Seadra	Super	25% 23	25% 23	25% 23	N/A
	Goldeen	Super	N/A	N/A	N/A	40% 25

B1F

Combined (Compressed)
Pokémon		Rod	Red	Green	Blue	Yellow
	Magikarp	Old	100% 5	100% 5	100% 5	100% 5
	Goldeen	Good	50% 10	50% 10	50% 10	50% 10
	Poliwag	Good	50% 10	50% 10	50% 10	50% 10
	Slowbro	Super	25% 23	25% 23	25% 23	N/A
	Seaking	Super	25% 23	25% 23	25% 23	60% 40, 50, 60
	Kingler	Super	25% 23	25% 23	25% 23	N/A
	Seadra	Super	25% 23	25% 23	25% 23	N/A
	Goldeen	Super	N/A	N/A	N/A	40% 30

Static

All Versions
Pokémon		Level	Games				Notes
	Mewtwo	70	R	G	B	Y	If defeated, no other Mewtwo can be obtained on the save file unless it is restarted.

Pokémon

Walking

1F

Combined (Compressed)
Pokémon		Red	Blue	Yellow
	Golbat	20% 46	20% 46	40% 50, 55
	Hypno	20% 46	20% 46	N/A
	Magneton	15% 46	15% 46	N/A
	Dodrio	10% 49	10% 49	N/A
	Venomoth	10% 49	10% 49	5% 54
	Arbok	10% 52	N/A	N/A
	Kadabra	5% 49	5% 49	N/A
	Parasect	5% 52	5% 52	5% 54
	Raichu	4% 53	4% 53	N/A
	Ditto	1% 53	1% 53	5% 55, 60
	Sandslash	N/A	10% 52	10% 52
	Graveler	N/A	N/A	15% 45
	Gloom	N/A	N/A	10% 55
	Weepinbell	N/A	N/A	10% 55

2F

Combined (Compressed)
Pokémon		Red	Blue	Yellow
	Dodrio	20% 51	20% 51	N/A
	Venomoth	20% 51	20% 51	N/A
	Kadabra	15% 51	15% 51	N/A
	Rhydon	10% 52	10% 52	5% 58, 60
	Marowak	10% 52	10% 52	N/A
	Electrode	10% 52	10% 52	N/A
	Chansey	5% 56	5% 56	N/A
	Wigglytuff	5% 54	5% 54	N/A
	Ditto	5% 55, 60	5% 55, 60	10% 60
	Golbat	N/A	N/A	40% 52, 57
	Graveler	N/A	N/A	15% 50
	Sandslash	N/A	N/A	10% 56
	Rhyhorn	N/A	N/A	10% 50
	Gloom	N/A	N/A	5% 58
	Weepinbell	N/A	N/A	5% 58

B1F

Combined (Compressed)
Pokémon		Red	Blue	Yellow
	Rhydon	20% 55	20% 55	10% 62
	Marowak	20% 55	20% 55	N/A
	Electrode	15% 55	15% 55	N/A
	Chansey	10% 64	10% 64	5% 56
	Parasect	10% 64	10% 64	N/A
	Raichu	10% 64	10% 64	N/A
	Arbok	5% 57	N/A	N/A
	Ditto	10% 63, 65, 67	10% 63, 65, 67	15% 60, 65
	Sandslash	N/A	5% 57	N/A
	Golbat	N/A	N/A	40% 54, 59
	Graveler	N/A	N/A	15% 55
	Rhyhorn	N/A	N/A	10% 52
	Lickitung	N/A	N/A	5% 50, 55

Fishing

1F

Combined (Compressed)
Pokémon		Rod	Red	Blue	Yellow
	Magikarp	Old	100% 5	100% 5	100% 5
	Goldeen	Good	50% 10	50% 10	50% 10
	Poliwag	Good	50% 10	50% 10	50% 10
	Slowbro	Super	25% 23	25% 23	N/A
	Seaking	Super	25% 23	25% 23	60% 35, 45, 55
	Kingler	Super	25% 23	25% 23	N/A
	Seadra	Super	25% 23	25% 23	N/A
	Goldeen	Super	N/A	N/A	40% 25

B1F

Combined (Compressed)
Pokémon		Rod	Red	Blue	Yellow
	Magikarp	Old	100% 5	100% 5	100% 5
	Goldeen	Good	50% 10	50% 10	50% 10
	Poliwag	Good	50% 10	50% 10	50% 10
	Slowbro	Super	25% 23	25% 23	N/A
	Seaking	Super	25% 23	25% 23	60% 40, 50, 60
	Kingler	Super	25% 23	25% 23	N/A
	Seadra	Super	25% 23	25% 23	N/A
	Goldeen	Super	N/A	N/A	40% 30

Static

All Versions
Pokémon		Level	Games			Notes
	Mewtwo	70	R	B	Y	If defeated, no other Mewtwo can be obtained on the save file unless it is restarted.

Items

1F

RGBY Items
Item	Games				Location	Notes
Nugget	R	G	B	Y	In the northwest area
Full Restore	R	G	B	Y	In the southwest area
Max Elixer	R	G	B	Y	Northern part of the large plateau in the center
Rare Candy	R	G	B	Y	On a rock southwest of the Max Elixer	Hidden. Picking up this item causes five others to disappear. Picking up any of those five will cause this one to disappear. All six are refreshed if a Fossil is given to revive in the Cinnabar Lab.
Max Elixer	R	G	B	Y	Southwest of the northeastern ladder
Nugget	R	G	B	Y	In the northwest area
Rare Candy	R	G	B	Y	On a rock east of the Full Restore	Hidden.
Full Restore	R	G	B	Y	In the southwest area
Max Elixer	R	G	B	Y	Northeast of the southwestern ladder
Rare Candy	R	G	B	Y	In the southeast corner
Ultra Ball	R	G	B	Y	Northeast of the center
PP Up	R	G	B	Y	On a rock south of the Ultra Ball	Hidden.
Max Revive	R	G	B	Y	In the east area

2F

RGBY Items
Item	Games				Location	Notes
Full Restore	R	G	B	Y	In the eastern area
Ultra Ball	R	G	B	Y	In the southeast area
PP Up	R	G	B	Y	In the southwest area
Full Restore	R	G	B	Y	Northwest of the center
PP Up	R	G	B	Y	In the eastern area
Ultra Ball	R	G	B	Y	In the southwestern area
Rare Candy	R	G	B	Y	In the western area
Ultra Ball	R	G	B	Y	Near the center
Max Revive	R	G	B	Y	Southeast of the center
PP Up	R	G	B	Y	On a rock south of the center of the floor	Hidden.
Full Restore	R	G	B	Y	In the east area

B1F

RGBY Items
Item	Games				Location	Notes
Ultra Ball	R	G	B	Y	In the eastern area on the plateau
Ultra Ball	R	G	B	Y	On a rock near the Max Revive	Hidden. Picking up this item causes five others to disappear. Picking up any of those five will cause this one to disappear. All six are refreshed if a Fossil is given to revive in the Cinnabar Lab.
Max Revive	R	G	B	Y	In the northeast area
Ultra Ball	R	G	B	Y	In the center
Ultra Ball	R	G	B	Y	On a rock in the northeast area	Hidden.
Max Revive	R	G	B	Y	In the northeast area
Max Elixer	R	G	B	Y	In the north area
Ultra Ball	R	G	B	Y	On the southwestern plateau
Ultra Ball	R	G	B	Y	In the northeast area
Max Revive	R	G	B	Y	On the southwestern plateau
PP Up	R	G	B	Y	On a rock near the waterway to the southwestern plateau	Hidden.

Items

1F

RBY Items
Item	Games			Location	Notes
Max Elixer	R	B	Y	Southwest of the northeastern ladder
Nugget	R	B	Y	In the northwest area
Rare Candy	R	B	Y	On a rock east of the Full Restore	Hidden.
Full Restore	R	B	Y	In the southwest area
Max Elixer	R	B	Y	Northeast of the southwestern ladder
Rare Candy	R	B	Y	In the southeast corner
Ultra Ball	R	B	Y	Northeast of the center
PP Up	R	B	Y	On a rock south of the Ultra Ball	Hidden.
Max Revive	R	B	Y	In the east area

2F

RBY Items
Item	Games			Location	Notes
Full Restore	R	B	Y	Northwest of the center
PP Up	R	B	Y	In the eastern area
Ultra Ball	R	B	Y	In the southwestern area
Rare Candy	R	B	Y	In the western area
Ultra Ball	R	B	Y	Near the center
Max Revive	R	B	Y	Southeast of the center
PP Up	R	B	Y	On a rock south of the center of the floor	Hidden.
Full Restore	R	B	Y	In the east area

B1F

RBY Items
Item	Games			Location	Notes
Ultra Ball	R	B	Y	In the center
Ultra Ball	R	B	Y	On a rock in the northeast area	Hidden.
Max Revive	R	B	Y	In the northeast area
Max Elixer	R	B	Y	In the north area
Ultra Ball	R	B	Y	On the southwestern plateau
Ultra Ball	R	B	Y	In the northeast area
Max Revive	R	B	Y	On the southwestern plateau
PP Up	R	B	Y	On a rock near the waterway to the southwestern plateau	Hidden.