game-developer

Game systems implementation for Unity and Unreal with ECS architecture, physics, networking, and performance optimization.

jeffallan/claude-skills|Updated Apr 8, 2026

Works with

Claude CodeCursorClineWindsurfCodexGoose

What it does

Covers core game development workflows: architecture design, ECS/component systems, physics configuration, multiplayer networking with lag compensation, and shader programming
Enforces 60+ FPS performance targets with profiling checkpoints; includes object pooling, LOD systems, async loading, and component caching patterns to eliminate frame-time bottlenecks
Prov

Repository

jeffallan/claude-skills

Last updated

Apr 8, 2026

Installation Guide

Select your AI agent

How to use game-developer on Cursor

AI-first code editor with Composer

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

›Cursor installed and configured on your machine
›Node.js 16+ with npm — verify with node --version
›Active project directory where you want to add game-developer

Run the install command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills add https://github.com/jeffallan/claude-skills --skill game-developer

Fetches game-developer from jeffallan/claude-skills and configures it for Cursor.

Select Cursor when prompted

The CLI shows a list of agents. Use arrow keys and space to select Cursor:

◆ Which agents do you want to install to?

│

│ ── Universal (.agents/skills) ────────────────

│ · Cline · Codex · Goose · Windsurf

│ ●Cursor(selected)

│ · Cursor · Aider · Continue

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/game-developer

Restart Cursor to activate game-developer. Access via /game-developer in your agent's command palette.

⚠

Security Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.

›View source on GitHub ›Skills CLI docs ›About Cursor ›What are agent skills?

Documentation

List & Monetize Your Skill

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Use Cases

User Story & Requirements Generation

Create detailed user stories, acceptance criteria, and feature specs

Example

Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios

✓

Reduce spec writing time by 50%, ensure comprehensive coverage

Competitive Analysis

Research competitors, compare features, identify gaps

Example

Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities

✓

Complete competitive research in 2 hours instead of 2 days

Roadmap Prioritization

Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs

Example

Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale

Core Workflow

Analyze requirements — Identify genre, platforms, performance targets, multiplayer needs

Design architecture — Plan ECS/component systems, optimize for target platforms

Implement — Build core mechanics, graphics, physics, AI, networking

Optimize — Profile and optimize for 60+ FPS, minimize memory/battery usage

✅ Validation checkpoint: Run Unity Profiler or Unreal Insights; verify frame time ≤16 ms (60 FPS) before proceeding. Identify and resolve CPU/GPU bottlenecks iteratively.

Test — Cross-platform testing, performance validation, multiplayer stress tests

✅ Validation checkpoint: Confirm stable frame rate under stress load; run multiplayer latency/desync tests before shipping.

Reference Guide

Load detailed guidance based on context:

Topic

Reference

Load When

Unity Development

references/unity-patterns.md

Unity C#, MonoBehaviour, Scriptable Objects

Unreal Development

references/unreal-cpp.md

Unreal C++, Blueprints, Actor components

ECS & Patterns

references/ecs-patterns.md

Entity Component System, game patterns

Performance

references/performance-optimization.md

FPS optimization, profiling, memory

Networking

references/multiplayer-networking.md

Multiplayer, client-server, lag compensation

Constraints

MUST DO

Target 60+ FPS on all platforms

Use object pooling for frequent instantiation

Implement LOD systems for optimization

Profile performance regularly (CPU, GPU, memory)

Use async loading for resources

Implement proper state machines for game logic

Cache component references (avoid GetComponent in Update)

Use delta time for frame-independent movement

MUST NOT DO

Instantiate/Destroy in tight loops or Update()

Skip profiling and performance testing

Use string comparisons for tags (use CompareTag)

Allocate memory in Update/FixedUpdate loops

Ignore platform-specific constraints (mobile, console)

Use Find methods in Update loops

Hardcode game values (use ScriptableObjects/data files)

Key Code Patterns

Object Pooling (Unity C#)

public class ObjectPool<T> where T : Component { private readonly Queue<T> _pool = new(); private readonly T _prefab; private readonly Transform _parent; public ObjectPool(T prefab, int initialSize, Transform parent = null) { _prefab = prefab; _parent = parent; for (int i = 0; i < initialSize; i++) Release(Create()); } public T Get() { T obj = _pool.Count > 0 ? _pool.Dequeue() : Create(); obj.gameObject.SetActive(true); return obj; } public void Release(T obj) { obj.gameObject.SetActive(false); _pool.Enqueue(obj); } private T Create() => Object.Instantiate(_prefab, _parent); }

Component Caching (Unity C#)

public class PlayerController : MonoBehaviour { // Cache all component references in Awake — never call GetComponent in Update private Rigidbody _rb; private Animator _animator; private PlayerInput _input; private void Awake() { _rb = GetComponent<Rigidbody>(); _animator = GetComponent<Animator>(); _input = GetComponent<PlayerInput>(); } private void FixedUpdate() { // Use cached references; use deltaTime for frame-independence Vector3 move = _input.MoveDirection * (speed * Time.fixedDeltaTime); _rb.MovePosition(_rb.position + move); } }

State Machine (Unity C#)

public abstract class State { public abstract void Enter(); public abstract void Tick(float deltaTime); public abstract void Exit(); } public class StateMachine { private State _current; public void TransitionTo(State next) { _current?.Exit(); _current = next; _current.Enter(); } public void Tick(float deltaTime) => _current?.Tick(deltaTime); } // Usage example public class IdleState : State { private readonly Animator _animator; public IdleState(Animator animator) => _animator = animator; public override void Enter() => _animator.SetTrigger("Idle"); public override void Tick(float deltaTime) { /* poll transitions */ } public override void Exit() { } }

game-developer

What it does

Category

Repository

Last updated

Installation Guide

How to use game-developer on Cursor

Prerequisites

Run the install command

Select Cursor when prompted

Verify installation

Security Notice

Documentation

List & Monetize Your Skill

Use Cases

User Story & Requirements Generation

Competitive Analysis

Roadmap Prioritization

Install Skill

Game Developer

Core Workflow

Reference Guide

Constraints

MUST DO

MUST NOT DO

Output Templates

Key Code Patterns

Object Pooling (Unity C#)

Component Caching (Unity C#)

State Machine (Unity C#)

Stakeholder Communication

Implementation Guide

Best Practices

When to Use This

Learning Path

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Reviews

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