Nether Basalt spawns in Cobbleverse

17 Pokémon have spawn rules in Nether Basalt biomes across 17 recorded spawn rules in the current dataset. Each entry below shows the levels, rarity bucket, relative weight and any time or weather restrictions recorded for that rule.

“Nether Basalt” is a spawn-pool label from the Cobbleverse dataset — it groups world biomes the game treats as one spawn pool. Relative weights are compared within the pool, never percentages.