Spawn Rates
What are Spawn Rates?
A spawn rate is the rarity, or probability, of a Pokémon spawning at a particular spawner. We usually write it as a chance, such as 1/1000, which means one chance in a thousand.
On average, you would meet a Pokémon with this rate once every 1000 spawns. That does not mean it is guaranteed after 1000 spawns. The roll starts over with every new spawn.
Picture a die with as many sides as the rate. For 1/1000, imagine a 1000-sided die. Every time a new Pokémon spawns, the game rolls that die. If it lands on 1, that Pokémon spawns. The other 999 times out of 1000, something else spawns.
How Spawners Work
The in-game spawners have multiple layers of probability to determine:
- The species, based on the spawn rate
- Extra rolls for mythical and shiny variants
- The nature, size, gender and IVs, each drawn at random with its own rules
How the Wiki Shows Spawn Rates
Spawn rates on this wiki are written as 1/N and rounded when they are entered. Values of N under 10 are shown as whole numbers from 2 to 10, rounded to the closest one. The old 1/x<10 notation was removed on 18 April 2025 for clarity.
A rate of 1/1 means it is the only Pokémon that can spawn at this spawner. This is mainly used for Legendary Pokémon.
Myth Busting
- Spawners do not have quotas or limits on what they can output
- It's theoretically possible for a Mew to spawn right after another Mew, even though they are very rare
- Staying at the same spawner for hours does not increase the odds. Even if it feels like it helps, it is just a placebo.