WEBWeb/Flash · 2011 · competitive turn-based battle sim

Pokémon Showdown

Pokémon Showdown (Web/Flash, 2011) has an open-source reimplementation, smogon/pokemon-showdown, and 7 other public projects, including a native port. An agent environment already wraps it.

Data checked 2026-10-12 · unbaked registry

Projects

pokemon-showdown

ReimplementationTypeScript (Node) server/sim; client AGPL5,951 starspushed 2026-10-10MIT licenserelease v0.11.11

Pokémon battle simulator.

Open-source battle simulator reimplementing Pokémon battle mechanics; runs locally

poke-env

Agent environmentPython asyncio client, Gymnasium/PettingZoo wrappers527 starspushed 2026-10-09MIT licenserelease 0.16.1

Poke-env: Python Interface for Pokemon Showdown Bots

Maintained (2026-10)

foul-play

Agent environmentPython + Rust engine (poke-engine), MCTS/expectiminimax385 starspushed 2026-10-12GPL-3.0 license

A Pokemon Showdown Battle AI

Active (2026-10)

PokeLLMon

Agent environmentpoke-env + LLM207 starspushed 2024-10-12no license

2024 (inactive)

PokeChamp

Agent environmentpoke-env + LLM minimax186 starspushed 2026-03-11custom licenserelease v1.2.0

Official repository of the spotlight ICML 2025 paper, PokeChamp: an Expert-level Minimax Language Agent.

ICML 2025 spotlight; 2026-03

metamon

Agent environmentpoke-env, offline RL on replay datasets144 starspushed 2026-07-23MIT licenserelease pac

Pokémon Showdown RL Agents and Datasets

Active (2026-07)

DualScreenDexarchived

Native port85 starspushed 2026-02-15MIT licenserelease v2.0.1

DualScreenDex is a companion Pokedex app designed specifically for dual-screen Android gaming handhelds (like the Ayn Thor). It uses live OCR screen scanning to automatically detect the Pokémon curre…

repo archived; dropped from awesome-decomp-games: quiver-only, <

VGC-Benchgeneral tool

Agent environmentpoke-env/Showdown, MARL, BC, LLM agents54 starspushed 2026-07-25MIT licenserelease Scarlet/Violet

An AI benchmark for Pokémon VGC with agent implementations using multi-agent reinforcement learning, behavior cloning, LLMs, and heuristics

Active (2026-07)

What you need

Free game data is included with at least one project.

Agent environments

More on Web/Flash

GameMethodYearStarsLast push

WEB2048Source releaseReimplementation+1201413k2026-08-19 WEBBrowserQuestSource release20129.4k2023-07-14 WEBA Dark RoomSource release20138.3k2025-05-23 WEBshapezSource release20207.0k2026-09-07 WEBUntrustedSource release20144.7k2025-05-31 WEBFriday Night Funkin'Source releaseReadable bytecode20203.8k2026-10-11 WEBOpenFront.ioSource releaseAgent environment20242.8k2026-10-12 WEBChrome Dino (T-Rex Runner)Source releaseReadable bytecode20142.2k2026-10-04

Found via pmariglia/foul-play, smogon/pokemon-showdown-client, SubmitGame/awesome-decomp-games/blob/main/data/d

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.