Pokemon Legends: Arceus offers players the opportunity to catch nearly 250 species of Pokemon in the wide, sprawling open world of the Hisui region. Players are encouraged to catch multiple Pokemon of each species in order to complete research tasks and fill out the Pokedex. Players of Pokemon Legends: Arceus are also able to hunt down and catch special Pokemon, including extra-large Alpha specimens and uniquely colored Shiny Pokemon.
Shiny Pokemon are extremely rare, having an approximately 1/4096 chance of spawning in the overworld. When a Shiny Pokemon spawns, it makes a distinct sound to inform players that it has appeared. Unlike previous Pokemon titles, overworld Pokemon are also visibly shiny, making them visually distinct from normal members of their species. Players can increase the spawn rate of Shiny Pokemon by completing research tasks for a species and by equipping an item known as the Shiny Charm, which can be acquired by reaching Research Level 10 with all 242 Pokemon in the Pokedex.
Pokemon Legends: Arceus Player Points Out Helpful Detail About Wisps
On Reddit, a user going by the screen name u/Jasmiinx shared a helpful flowchart, crafted by their husband, that provides Legends: Arceus players with information about how to reliably hunt Shiny Pokemon. The flowchart explains that Shiny Pokemon have a greater chance of showing up in Mass Outbreaks — in-game events where a high number of a specific Pokemon appears for a short period of time. The appearance rate for Shiny Pokemon in Outbreaks is much better — a mere 1 in 152.9. According to u/Jasmiinx's flowchart, players can save and reset the game if a Shiny Pokemon does not appear in the Outbreak, essentially encountering the same Outbreak over and over again
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