Pokemon Yellow Version: Special Pikachu Edition Cerulean Cave Map Map for Game Boy by KeyBlade999 - GameFAQs
![CloudMax on X: "Did some testing to figure out how the Cerulean Cave item spawns worked. Master Ball seems to just be a very rare drop on the Poké Ball spots. And CloudMax on X: "Did some testing to figure out how the Cerulean Cave item spawns worked. Master Ball seems to just be a very rare drop on the Poké Ball spots. And](https://pbs.twimg.com/media/DsssZUwWoAAecPW.jpg:large)
CloudMax on X: "Did some testing to figure out how the Cerulean Cave item spawns worked. Master Ball seems to just be a very rare drop on the Poké Ball spots. And
![Appendix:Red and Blue walkthrough/Section 17 - Bulbapedia, the community-driven Pokémon encyclopedia Appendix:Red and Blue walkthrough/Section 17 - Bulbapedia, the community-driven Pokémon encyclopedia](https://archives.bulbagarden.net/media/upload/thumb/7/70/Unknown_Dungeon_B1F_RB.png/300px-Unknown_Dungeon_B1F_RB.png)