What is game-networking-guide?

A guide to networking real-time multiplayer games and simulations. It explains how computers share changing game state, choose which computer owns each object, and send updates over UDP, a fast transport that does not guarantee delivery or order.

Use it to design client/server or peer-to-peer layouts, object authority, state replication, snapshot and delta updates, acknowledgements, and reliable or unreliable message channels.

It provides a way to reason about delayed, lost, or out-of-order network messages without letting multiple computers disagree about who controls an object. It also helps limit updates to the state that other players need.

game-networking-guide — Skill for Claude Code by xonovex/platform

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add xonovex/platform --skill game-networking-guide

Clone the repo

git clone --depth 1 https://github.com/xonovex/platform

Made for: Claude Code.

Or install xonovex-game-engine, the plugin that ships this one along with the rest of its 11 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/xonovex/platform/game-networking-guide/github.svg)](https://agentmods.dev/skills/xonovex/platform/game-networking-guide)

Your own site

<a href="https://agentmods.dev/skills/xonovex/platform/game-networking-guide"><img src="https://agentmods.dev/badge/skills/xonovex/platform/game-networking-guide/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/xonovex/platform/game-networking-guide"><img src="https://agentmods.dev/badge/skills/xonovex/platform/game-networking-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 123 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,236 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00123	$0.01236
Opus 5.5	$0.00049	$0.00494
Sonnet 5.5	$0.00025	$0.00247
Haiku 4.5	$0.00012	$0.00124

Measured 2mo ago against content hash 79ada7047809, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

game-networking-guide scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/runtime/plugin/plugin-game-engine/skills/game-networking-guide/SKILL.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Game networking Guidelines

API-agnostic architecture for real-time multiplayer over an unreliable network: how participants are modeled and who owns state, what to put on the wire, and how reliability is layered on UDP. This skill replicates a typed world, see data-model-guide for the object/id model, ecs-guide for the component model, and data-oriented-design-guide for packing wire data.

Essentials

Nodes form a graph, topology is data - Model each participant as a simulation bound to an address; keep client/server-vs-peer and accept/own/replicate as per-node config, not baked-in protocol, see references/topology-and-authority.md
One owner per object - Exactly one node is the source of truth for a networked object and replicates it; others apply received updates read-only, see references/topology-and-authority.md
Replicate opted-in state - Replication is a per-component capability plus a per-object flag; the owner watches for changes and sends only to interested nodes, see references/state-replication.md
Guarantee per packet type, over UDP - Open one-way pipes between nodes; tag every payload with a type that carries its delivery guarantee (unreliable / ordered / reliable), see references/transport-and-channels.md

Replicating world state

Two-level opt-in - A component declares whether/how it replicates; each object must also be flagged, or nothing is sent, see references/state-replication.md
Cheap default, optimize by description - Default to a whole-component blob; supply a field layout and per-field watch cadence to send only changed members, see references/state-replication.md
Baselines and acks - Reuse the save/load apply path for replication and watch ack/out-of-order counts, see references/delta-and-snapshots.md

Read the full file on GitHub · 50 lines

Files

What ships with it

9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 50 lines · 123 tokens per session scan A 79ada7047809

Subscribe to this mod's changes

game-networking-guide is a skill published in the GitHub repository xonovex/platform (6 stars, last pushed 12d ago), licensed MIT. It adds 123 tokens to every session and 1,236 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-08.

Claude Code Game development ai bubblewrap claude cli docker

game-networking-guide next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
game-networking-guidexonovex/platform	Skill	6	12d ago	MIT	A	123	Claude Code
gamedev-multiplayerericrisco/rsc-harness	Skill	503	2d ago	MIT	A	86	Claude Code, Codex
gamedev-physicsericrisco/rsc-harness	Skill	503	2d ago	MIT	A	102	Claude Code, Codex
hz-unity-meta-movement-sdk-retargetingmeta-quest/agentic-tools	Skill	245	1mo ago	Apache-2.0	A	186	Claude Code
swallowtailregiellis/godot-mcp-go	Skill	71	29d ago	MIT	A	0	Claude Code, Codex
hz-platform-sdkmeta-quest/agentic-tools	Skill	245	1mo ago	Apache-2.0	A	135	Claude Code
mc-publish-addonguguzea/MC-AI-Coding-Assistant-Tool	Skill	132	yesterday	none	A	32	Claude Code, Codex