"How to add documentation to a project or system" matching MCP servers:

Enables two LLMs to play Tic-Tac-Toe against each other autonomously using a shared tool and an SSE relay. The server facilitates agent-to-agent communication by holding tool responses until the opponent makes a move, managing the game state in real-time.

Lets AI assistants control the physical Return to Dark Tower board game tower via Bluetooth, enabling connection, calibration, sound, lights, drum rotation, seal breaking, and game sequences through natural language.

MCP server for Project CPU, a blockchain game on EVM. It lets an AI agent play on your behalf: read the world map, reveal cells, build and mine, craft, move resources, trade at marketplaces, and cash out to on-chain $CPU.

A Unity editor MCP plugin that exposes 49 tools over HTTP for managing Unity projects and editing VRChat avatars, including expressions, parameters, and performance stats.

Enables AI clients to control background Blender jobs over stdio so they can inspect a 3D character or companion model, calibrate its anatomy and named bones, bake and export animation, and numerically verify the persisted GLB for playback review. Includes a CLI, models and workspaces that stay local unless explicitly shared.

Provides access to comprehensive Riot Games API documentation for League of Legends, Teamfight Tactics, Valorant, and Legends of Runeterra, including endpoint details, parameters, and response formats.

Enables a bot to inspect, query, create, edit, and script Roblox Studio instances in token-cheap batches, plus run Luau, playtests, screenshots, and inputs through Roblox's official Studio MCP connection. It runs locally over stdio or an authenticated local HTTP endpoint, returning small structured answers instead of dumping whole games into context.

A Python MCP server that connects AI clients to a running Unity game over a local, token-gated HTTP endpoint, letting the agent read only what a player can see and hear and act through the same virtual pad a human uses. It also exposes back-face routes for development data, plus reflex, pause, capture, and event/wait tools.

An MCP-based trivia game server where AI creates rounds with two true statements and one false 'twist' about various topics, letting players guess which statement is false.

Enables AI agents to play the CPU Game on EVM, including world exploration, building, crafting, and trading via natural language.

Exposes nine tools over stdio to bridge Godot 4 and Unity 6 projects, enabling character-data loading, headless verification, combat simulation, and live telemetry workflows.

A gamified task management MCP server that mimics League of Legends ranked match system, enabling users to add tasks, complete them to spin a gacha, and earn or lose LP to change ranks.

Enables querying an AI-enriched video game database for platform availability, exclusivity by console maker, visual art style, and studio country through natural language.

An MCP server that generates RuneLite Goal Planner import strings from natural language goal descriptions, enabling assistants to create paste-ready share codes for Old School RuneScape goal planning.

An MCP server that exposes PPSSPP — the PlayStation Portable emulator — to any MCP-compatible client (Claude Desktop, Claude Code, etc.) via PPSSPP's built-in WebSocket debugger interface. Read and write PSP memory, drive games with button input, capture screenshots, set CPU breakpoints, inspect MIPS Allegrex registers — all through a clean tool interface. No bridge plugin needed; PPSSPP's debugg

Enables assistants to search and look up Riftbound TCG cards, list sets, and search or fetch public decklists (resolving stored card UUIDs into real card names) through the community card database's API, so questions about cards absent from model training data can be answered with real data.

MCP server for BizHawk, the multi-system emulator. Drive NES, SNES, GB/GBC/GBA, Genesis, N64, PSX, Saturn and more through one Lua bridge — memory r/w across named domains, joypad input, frame-advance, screenshot, save/load state.

Enables AI assistants to read a Comunio fantasy football league's squad, market, offers, standings, and transfers, and to act on the user's behalf by bidding, selling, and setting the lineup.

Enables Claude to read Crusader Kings III save files and retrieve strategic game information such as realm overview, military, succession, diplomacy, vassals, factions, and expansion options.

Enables personalized Steam game discovery by ranking the store against a player's playtime history and stated preferences, with tools to search games, inspect details and reviews, and explore taste profiles.

Enables MCP clients such as Claude to search and filter a Steam library, get explained Deck-friendly picks, and triage games into lanes, edit notes, reorder Up next, and refresh the library through a self-hosted Steam Backlog Triage dashboard.

Provides tools for searching Agent8 game development code examples and system prompts to assist in Agent8 SDK development.

Analyzes chess positions via Stockfish, returning best moves and evaluations from FEN or PGN input.

Enables AI agents to connect to and play a seat in the Agent Raid co-op boss-raid A2A game, using MCP tools to wait for turns, submit moves, and exchange party chat.

Enables Claude Code to fetch a public Dota 2 match from OpenDota and return a coaching-report-ready JSON summary covering laning, farming, deaths, itemization, objectives, teamfights, benchmark percentiles, skill build, damage sources, and rune control, with optional deep-dives on a specified player.

MCP server for managing a Nitrado-hosted Project Zomboid server. It lets you check status, edit sandbox settings, manage mods, and tail logs through natural language.

A read-only MCP server that reports free games on Epic Games Store and GOG.com using public endpoints, without requiring any account or credentials.

MCP server that lets AI assistants read and query Dwarf Fortress world legends: search events, objects, and properties, or read summaries and base rates to distinguish real patterns from common traits.

Enables an AI assistant to deterministically score hands of a Persian trick-taking card game from conversational bids and results, returning updated totals, validation errors, and plain-English explanations.

Official MCP server for Scorezilla (leaderboards for games). Your AI coding assistant can bootstrap a leaderboard, inspect games and boards, read top-N standings, and paste ready-to-run SDK integration code — without leaving the editor.