In Pokémon Legends: Arceus all Legendary & Mythical Pokémon can have their internal values predicted ahead of time. By understanding how to predict upcoming Pokémon we can obtain any Legendary/Mythical we like with desirable IV & Nature combinations.
The method the game uses to generate Legendary/Mythical Pokémon varies so the RNG manipulation method used will depend on your chosen target. For the purposes of this guide the generation methods will be referred to as "Main RNG" or "Spawner RNG".
Main RNG operates as a continuously and naturally advancing RNG state, requiring precise timing of the final inputs before the Pokémon is generated in order to achieve the desired outcome. Those experienced with RNG manipulation in other Pokémon games may find this method familiar.
Some Legendary Pokémon are linked to overworld spawners. In short, when loading into the map, these Pokémon are assigned a "Spawner ID." To advance the seed, the Pokémon must be knocked out and then respawned. Achieving the desired outcome requires respawning the Pokémon a specific number of times in succession until the target has been reached.
.NET 9.0
and run the setup wizard until complete. This is a required dependency for that allows our programs to function.LINQPad
and run the setup wizard until complete. This will be used as an RNG tool for the purposes of this guide.Sysbot.NET - Moarencounterbots
into a fresh, empty folder. this will be used to track our RNG seeds.PokeViewer.NET
into a fresh, empty folder. This will be used to track our current RNG state.sys-botbase
and extract the atmosphere
folder to the root of your Switch SD card. This allows programs to communicate remotely with your console.Ensure that sys-botbase has been properly installed before continuing. You should see a folder named 430000000000B
(sys-botbase) atmosphere/contents
directory of your SD card if done correctly. Refer to the SysBot.NET Wiki (Troubleshooting) page if you are running into problems. Make sure to follow every step; this should resolve 99% of user issues.
Figure 1 - Moarencounterbots Initial Setup
Before doing anything else you will need to configure SysBot.exe
to work for Legends: Arceus, this can be achieved by doing the following:
SysBot.exe
at least once, then close the program. Doing this will generate a file named config.json
.config.json
and open it using your favourite text editor (e.g Notepad), you should see a bunch of settings that determine how the bot operates.Mode
and change this to 3
(Mode 3 represents Legends: Arceus).SysBot.exe
again, you should now see SysBot: Pokémon (LA)
in the program header if done correctly.It is recommended to follow these instructions if you are not 100% confident that sys-botbase has been properly installed:
Bots
tab, type the IP address into the assigned field.Add
button.Start All
.Logs
tab, you should now see your trainer information (OT/TID).If you are running into issues communicating with the console, confirm that sys-botbase has been properly installed by following the installation steps listed above. Refer to the troubleshooting Wiki if you are still running into issues. Do not continue following the guide until the bot is able to interact with your console with no issues.
Icon | Weather Condition | Mark | Title |
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Normal Weather | — | — |
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Overcast |
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the Cloud Watcher |
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Raining |
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the Sodden |
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Thunderstorm |
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the Thunderstruck |
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Intense Sun |
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the Parched |
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Snowing |
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the Snow Frolicker |
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Snowstorm |
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the Shivering |
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Sandstorm |
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the Sandswept |
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Heavy Fog |
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the Mist Drifter |