Hidden Grottoes - Rangi42/polishedcrystal GitHub Wiki

Main databases: engine/events/hidden_grottoes.asm; the data/events/hidden_grottoes directory

Hidden Grotto, a canon B2/W2 feature, is available in this game; Lyra introduces it at Route 32. It now resets daily.

The probability for each location:

Content	%
Pokémon #1	7.5%
Pokémon #2	7.5%
Pokémon #3	4%
Pokémon #4	1%
Poké Ball	12.5%
Great Ball	5%
Ultra Ball	2%
Potion	6.25%
Super Potion	2.5%
Hyper Potion	1%
Repel	6.25%
Super Repel	2.5%
Max Repel	1%
Location-based item	1%
Mulch (hidden)	24.75%
Tiny Mushroom (hidden)	7.5%
Big Mushroom (hidden)	2.5%
Balm Mushroom (hidden)	0.25%
Silver Leaf (hidden)	2%
Gold Leaf (hidden)	2%
Rare Candy (hidden)	0.25%
PP Up (hidden)	0.5%
PP Max (hidden)	0.25%

See grottoes.asm for the location, Pokémon and their level, and location-based items.