pokemon-showdown/server
Kris Johnson b555f4d8ce
Implement Champions (#11910)
* Make a mod file

* Add Pokemon in Champions (#3)

* Add new Megas abilities (#4)

* Add new Megas abilities

* Apply suggestion from @KrisXV

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Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Add conditions for Champions (#5)

* Add conditions for Champions

* Add a turn limit to freeze

* Swap the order of the checks

Co-authored-by: André Bastos Dias <80102738+andrebastosdias@users.noreply.github.com>

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Co-authored-by: André Bastos Dias <80102738+andrebastosdias@users.noreply.github.com>

* Disable Fake Out if it is not the first active move action (#7)

* Disable Fake Out if it is not the first active move action

* Remove unnecessary code

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Co-authored-by: André Bastos Dias <dias.andre@siemens.com>

* Implement Piercing Drill, Spicy Spray and Unseen Fist (#2)

* Add Piercing Drill and Spicy Spray

Fix ability numbers

Refactor condition

Disallow Piercing Drill/Spicy Spray in formats !Obtainable Abilities without +Future

Refactor condition

* Rename blockStatus

* CFZ-moves completely bypass Protect

* Update Gen 4 Protect

* Old gen Wide Guard and Quick Guard

* Fix Wide Guard

* Clean Mat Block implementation

* Nerf Unseen Fist

* Fix condition

* Update sim/battle.ts

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Co-authored-by: André Bastos Dias <dias.andre@siemens.com>
Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Implement PP mechanics (#8)

* Implement PP mechanics

* Clip all moves to 20 PP

* Apply suggestion from @KrisXV

* Update scripts.ts

---------

Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Add Champions stat calculaiton

* Fix conflicts with smogon/master (#11)

* Fix stat formula (#12)

* Implement PP mechanics (#8)

* Implement PP mechanics

* Clip all moves to 20 PP

* Apply suggestion from @KrisXV

* Update scripts.ts

---------

Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Fix stat formula

* For clarity like we do with friendship in letsgo

* If we don't allow IVs and Level to be modifiable, there is not point in having `Adjust Level = 50`

---------

Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Add Champions Items (#9)

* Remove Mega Raichus, Mega Z, and Greninja-Bond (#10)

* Remove Mega Raichus and Mega Z

* Remove Greninja-Bond

* Implement Mega Sol's activation message (#13)

* Implement Mega Sol's activation message

* Update ModdedBattlePokemon interface

* Implement move changes (#6)

* Implement move changes

* Re-implement Salt Cure changes

* Update moves

* Implement Blood Moon package

* Mimic https://github.com/smogon/pokemon-showdown/pull/11838/

https://github.com/smogon/pokemon-showdown/pull/11838/

* Implement accuracy and PP changes

* Mark Double Shock and Revival Blessing as Past moves

* Import learnsets from Serebii (#19)

* Import learnsets from serebii

* floette -> floetteeternal

* Update learnsets

* Apparently I forgot to give Gourgeist-Small its tier (#15)

* Move Pikachu to NFE (#21)

* Oops

* Add Pokemon I forgot the first time (#24)

* Add 'Past' moves (#23)

* Add past moves

* Fix move availability

* AfterHit effects should activate even if the source faints (#20)

* AfterHit effects should activate even if the source faints

* Change Gens 3-4 event order

* Ups

* Announce 4x and 0.25x effectiveness (#14)

* Reset Encore priority and choose random target (#17)

* Reset Encore priority and choose random target

* Allow onOverrideAction

* Quash + Encore interaction

* Don't send target

targetLoc was actually thing being checked but wtv

* Activate White Herb after choosing the Parting Shot switch (#26)

* Activate White Herb after choosing the Parting Shot switch

* Add comment

* Add formats

* Implement flag changes (#25)

* Implement flag changes

* Fix Gen 5 Rage Powder (remove poder immunity check)

* Add moves and abilities descriptions

* Apply suggestion from @KrisXV

* Comment Rage Powder

Leave this comment and I would choose the implementation depending on what we see from the healing flag.

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Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Announce status immunities from abilities (#22)

* Mega Sol boosts the damage of Fire-type moves as if they were under sun (#18)

* Remove hardcoded Utility Umbrella

* Check effective weather on attacker

* Don't activate Mega Sol under sun

* Add TODO comment

* TODO: check interaction with Utility Umbrella

* Move implementation to base mod

* Do not revert Mega Evolutions upon fainting (#16)

* Revert Mega Evolutions on fainting

* Allow diferent levels in the team builder

* TODO: confirm interaction with Revival Blessing

* Add Species Clause and Obtainable

* Update team-validator.ts

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Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Update abilities percentages (#27)

* Healer has a 50% chance of curing the status conditions of its allies

* Update Shed Skin

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Co-authored-by: Kris Johnson <11083252+KrisXV@users.noreply.github.com>

* Fix crashes

* add custom game

* Fix typo

* update flat rules

* Update data/mods/champions/scripts.ts

Co-authored-by: Slayer95 <ivojulca@hotmail.com>

---------

Co-authored-by: shrianshChari <30420527+shrianshChari@users.noreply.github.com>
Co-authored-by: André Bastos Dias <80102738+andrebastosdias@users.noreply.github.com>
Co-authored-by: André Bastos Dias <dias.andre@siemens.com>
Co-authored-by: Karthik Bandagonda <32044378+Karthik99999@users.noreply.github.com>
Co-authored-by: Slayer95 <ivojulca@hotmail.com>
2026-04-10 20:29:01 -06:00
..
artemis Artemis: Ignore ETIMEDOUT errors 2025-12-13 13:11:39 -06:00
chat-commands Implement Champions (#11910) 2026-04-10 20:29:01 -06:00
chat-plugins Github: Up cooldown on PR displays to one hour 2026-04-06 13:50:18 -05:00
modlog Refactor startup (#11346) 2025-10-17 19:37:47 -07:00
private-messages Refactor startup (#11346) 2025-10-17 19:37:47 -07:00
static Fix client redirect 2025-06-15 07:25:04 -07:00
tournaments Tour Settings: Make autoconfirmed only actually work 2025-09-20 18:04:29 -06:00
chat-formatter.ts Fix crash in formatText 2026-01-10 14:36:51 -08:00
chat-jsx.tsx Convert SSB and Rands Winrate chat plugins to tsx (#11030) 2025-04-15 13:37:41 -06:00
chat.ts Fix link extraction in smogtours art credit field 2025-10-28 13:42:30 -05:00
config-loader.ts Config: Arrays are not valid for Config.subprocesses (#11532) 2025-10-25 23:04:35 -07:00
friends.ts Further update tests after startup refactor (#11521) 2026-01-25 07:58:21 -05:00
global-types.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
global-variables.d.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
index.ts Further update tests after startup refactor (#11521) 2026-01-25 07:58:21 -05:00
ip-tools.ts IPTools: Fix CIDR ranges at 128.* and up (#11466) 2025-10-25 18:26:44 -04:00
ladders-challenges.ts TypeScript: Enable noImplicitOverride 2025-02-26 14:38:32 -08:00
ladders-local.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
ladders-remote.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
ladders.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
loginserver.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
monitor.ts Refactor startup (#11346) 2025-10-17 19:37:47 -07:00
punishments.ts Punishments: Disallow Tor IPs from connecting 2025-07-07 12:18:39 -05:00
README.md Explain insecure subdomain in server/README.md (#11212) 2025-06-20 16:47:56 -07:00
replays.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
room-battle-bestof.ts Best-of: Nullify child game parent rooms on expiry rather than destroy 2025-09-15 13:12:44 -05:00
room-battle.ts Explicitly set type="submit" on form buttons (#11726) 2026-03-17 00:17:03 -07:00
room-game.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
room-minor-activity.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
roomlogs.ts Update to ESLint 9 (#10926) 2025-02-25 20:03:46 -08:00
rooms.ts Implement Champions (#11910) 2026-04-10 20:29:01 -06:00
sockets.ts Refactor startup (#11346) 2025-10-17 19:37:47 -07:00
team-validator-async.ts Refactor startup (#11346) 2025-10-17 19:37:47 -07:00
user-groups.ts Remove useless spreads (#11132) 2025-05-24 16:19:48 -07:00
users.ts Fix various typos (#11607) 2025-12-08 18:38:02 -06:00
verifier.ts Refactor startup (#11346) 2025-10-17 19:37:47 -07:00

Pokémon Showdown Server

This repository contains the files needed to set up your own Pokémon Showdown server. Note that to set up a server, you'll also need a server computer.

You can use your own computer as a server, but for other people to connect to your computer, you'll need to expose a port (default is 8000 but you can choose a different one) to connect to, which sometimes requires [port forwarding][5]. Note that some internet providers don't let you host a server at all, in which case you'll have to rent a VPS to use as a server.

Installing

./pokemon-showdown

(Requires Node.js v16+)

If your distro package manager has an old Node.js version, the simplest way to upgrade is n usually no root necessary:

npm install --global n
n latest

Detailed installation instructions

Pokémon Showdown requires you to have Node.js installed, v14.x or later.

Next, obtain a copy of Pokémon Showdown. If you're reading this outside of GitHub, you've probably already done this. If you're reading this in GitHub, there's a "Clone or download" button near the top right (it's green). I recommend the "Open in Desktop" method - you need to install GitHub Desktop which is more work than "Download ZIP", but it makes it much easier to update in the long run (it lets you use the /updateserver command).

Pokémon Showdown is installed and run using a command line. In Mac OS X, open Terminal (it's in Utilities). In Windows, open Command Prompt (type cmd into the Start menu and it should be the first result). Type this into the command line:

cd LOCATION

Replace LOCATION with the location Pokémon Showdown is in (ending up with, for instance, cd "~/Downloads/Pokemon-Showdown" or cd "C:\Users\Bob\Downloads\Pokemon-Showdown\").

This will set your command line's location to Pokémon Showdown's folder. You'll have to do this each time you open a command line to run commands for Pokémon Showdown.

Copy config/config-example.js into config/config.js, and edit as you please.

If you're on Windows, you may need to link Git's UNIX commands to your PATH in order to build Pokémon Showdown. Git provides directions to do so here.

Congratulations, you're done setting up Pokémon Showdown.

Now, to start Pokémon Showdown, run the command:

node pokemon-showdown

(If you're not on Windows, we recommend doing ./pokemon-showdown instead.)

You can also specify a port:

node pokemon-showdown 8000

Visit your server at http://SERVER:8000

Replace SERVER with your server domain or IP. Replace 8000 with your port if it's not 8000 (the default port).

Yes, you can test even if you are behind a NAT without port forwarding: http://localhost:8000 will connect to your local machine. Some browser setups might prevent this sort of connection, however (NoScript, for instance). If you can't get connecting locally to work in Firefox, try Chrome.

You will be redirected to http://SERVER.insecure.psim.us, with SERVER converted to a format that can be put in a URL (replacing . with -, : with --, and - with ---).

The psim.us domain is used for shared account logins with PS Main. The insecure.psim.us subdomain is for servers missing a HTTPS certificate (which you won't have unless you have a domain and manually set that up).

If the URL is a big deal for you, our psim.us site may be embedded in an iframe in your website. Alternatively, if you truly want to host the client yourself, there is a repository for the Pokémon Showdown Client. It's not recommended for beginners, though.

Setting up an Administrator account

Once your server is up, you probably want to make yourself an Administrator (~) on it.

config/usergroups.csv

To become an Administrator, create a file named config/usergroups.csv containing

USER,~

Replace USER with the username that you would like to become an Administrator. Do not put a space between the comma and the ampersand.

This username must be registered. If you do not have a registered account, you can create one using the Register button in the settings menu (it looks like a gear) in the upper-right of Pokémon Showdown.

Once you're an administrator, you can promote/demote others easily with the /globaladmin, /globalmod, /globaldriver, etc commands.