Legendary/Mythical RNG (CFW)

In Legends: Arceus, Legendary and Mythical Pokemon can be RNG manipulated to achieve desirable IV and Nature combinations. The method used for a specific Pokemon depends on whether it is generated using "Main RNG" or "Spawner RNG". We can use Anubis' fork of SysBot.NET and RNG scripts to monitor both RNG states in real-time.

RNG Type Distinctions:
Main RNG:

Main RNG operates as a continuously and naturally advancing RNG state, requiring precise timing of the final inputs before the Pokemon is generated in order to achieve the desired outcome. Those experienced with RNG manipulation in other Pokemon games may find this method familiar.

Encounters:
  • Dialga or Palkia - Origin Form
  • Dialga or Palkia - Non-Origin Form
  • Giratina
  • Regigigas
  • Arceus
Spawner RNG:

Some Legendary Pokemon are linked to overworld spawners. In short, when loading into the map, these Pokemon are assigned a "Spawner ID." To advance the seed, the Pokemon must be knocked out and then respawned. Achieving the desired outcome requires respawning the Pokemon a specific number of times in succession until the target has been reached.

Encounters:
  • Lake Trio - Uxie, Mesprit & Azelf
  • Weather Quartet - Tornadus, Thundurus, Landorus & Enamorus
  • Heatran
  • Cresselia
  • Manaphy/Phione
  • Shaymin
  • Darkrai

Download & Installation

The required downloads you will need will depend on the type of encounter you wish to RNG abuse. You do not need anything associated with Spawner RNG if you wish to manipulate a Main RNG encounter, and vice versa.

Required Downloads:
Required Downloads:
Installation Instructions:
  1. Download and run the .NET installer, then follow the setup instructions until fully complete. This is a required dependency.
  2. Download and extract the contents of Moarencounterbots.zip into an empty folder in a known location on your computer.
  3. Download and extract the contents of PokeViewer.NET into an empty folder in a known location on your computer.
  4. Download the latest release of sys-botbase and extract the atmosphere folder to the root of your Switch SD card, then reboot the console.
  5. Open the relevant script for the type of RNG manipulation you are performing in your browser, script setup will be expanded on later.

Important - This guide also comes with a pre-compiled download for SysBot.NET - Moarencounterbots. If you wish to use the absolute latest commit, you must build the project yourself by following this guide.
Continue to bot & script setup Main RNG
Continue to bot & script setup Spawner RNG