// packages/game-server/plugins/
const plugin: PluginDefinition = {
  name: "welcome",
  register(ctx) {
    ctx.eventBus.on("player:login", (e) => {
      ctx.sendSystemMessage(e.playerId, "Welcome!");
    });
  }
};

// packages/shared/src/game.config.ts
features: {
  pvp: true,
  petBattles: true,
  guilds: true,
  housing: true,
  survival: true,
  // 19 flags total
}

// 44 systems · 20 TPS tick loop
MobAISystem.update(dt);
MovementSystem.update(dt);
CombatSystem.update(dt);
SurvivalSystem.update(dt);
BroadcastSystem.update(dt);

Full-Stack MMO Engine — 44 Systems, One Monorepo

Build Your Own
Isometric MMO

A full-stack isometric 2D MMO engine with combat, crafting, pets, housing, guilds, PvP, survival, and 38 more systems — all server-authoritative. Next.js client, Node.js server, PostgreSQL, admin panel, and Electron studio.

Start Building Free Read the Docs

Full source code includedNo royalties — keep 100%Lifetime updates

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/ features

One studio.
Every system.

44 Game Systems

Combat, crafting, harvesting, quests, pets, mounts, housing, guilds, PvP, market, survival, farming, achievements, and more — all server-authoritative, all wired end-to-end from database to UI.

20 TPS Authoritative Server

Node.js game server with fixed tick loop, WebSocket networking, spatial hash grid, EventBus, and 57+ client-server message types. Delta compression ensures smooth multiplayer at scale.

PixiJS 8 Isometric Client

Isometric 2:1 diamond renderer with dynamic lighting (AO, bloom, shadows, vignette), day/night cycle, weather particles, 8-directional movement, entity interpolation, and 54 HUD components.

Real-Time Combat & Pets

GCD-based combat with 9 AoE shapes, 22 status effects, 18 weapon types, and full PvP with 5 zone rule types. Plus a complete Pokémon-style pet system with battles, taming, breeding, and evolution.

TypeScript Plugin SDK

Drop a .ts file into the plugins folder and it auto-loads. 35+ typed events, custom commands, client-server messaging, persistent data store, and full auto-cleanup on unload.

Export & Deploy Anywhere

Build desktop launchers for Windows, macOS, and Linux with auto-updater. Deploy the web client via Next.js. One-click build pipeline in the Electron Studio app with code signing support.

Showcase

See it in action

Game Server

Server-authoritative Node.js game server with a fixed 20 TPS tick loop, 44 gameplay systems, spatial hash grid, EventBus, and TypeScript plugin system. All game state validated on the server — clients send intents, the server broadcasts results.

20 TPS tick loop44 systemsWebSocket + delta compressionSpatial hash gridPlugin auto-loader

ED5 MMO Studio

server.config.ts

// packages/game-server/src/core/tick-loop.ts
TickLoop.onTick(deltaMs)
  ├── EventBus.emit("tick:start", { deltaMs })
  ├── MobAISystem.update(dt)
  ├── MovementSystem.update(dt)
  ├── CombatSystem.update(dt)
  ├── SurvivalSystem.update(dt)
  ├── EnvironmentSystem.update(dt)
  ├── StatusEffectSystem.update(dt)
  ├── PersistenceSystem.update(dt)
  ├── BroadcastSystem.update(dt)   // sends state to clients
  └── EventBus.emit("tick:end", { deltaMs, tickMs })

// 44 systems: combat, crafting, harvest, skills,
// quests, pets, mounts, guilds, housing, PvP,
// market, trading, mail, survival, farming...

Game Systems

Database Tables

HUD Components

0 TPS

Server Tick Rate

Pricing

One price. Forever yours.

Pay once, build forever. No subscriptions, no royalties, no hidden fees. Every plan includes lifetime updates.

Indie

$149.99one-time

Everything you need to build and ship your first isometric MMO.

Full source code (monorepo)
44 server-authoritative game systems
PixiJS 8 isometric client with lighting
Admin panel with 30 editor pages
82-table PostgreSQL database & seed data
TypeScript plugin SDK with 35+ events
Desktop launcher builder (Win/Mac/Linux)
Community Discord + lifetime updates

Best Value

Studio

$299.99one-time

For teams serious about launching a commercial MMO.

Everything in Indie
Electron Studio app with project manager
Build & patch pipeline for player launchers
Procedural world generation (biomes, POIs)
Pokémon-style pet battles & breeding
Guild, alliance & zone control systems
Priority email support
Commercial license — no royalties

Enterprise

$499.99one-time

White-glove support for studios shipping at scale.

Everything in Studio
Dedicated account manager
Custom plugin & system development
Infrastructure & scaling consulting
Multi-server sharding guidance
SLA & uptime guarantee
Team onboarding sessions
Custom asset pipeline integration

Secure payment via Stripe. No license activation required — download immediately after purchase.

Testimonials

Loved by game creators

“ED5 Studio let us go from concept to live MMO in 3 months. Having 44 systems already wired end-to-end saved us hundreds of hours compared to building from scratch.”

Alex Chen

Lead Developer, Starfall Online

“The plugin system is incredible. We built a full custom event system in a weekend using the EventBus hooks. The auto-cleanup on unload means zero memory leaks.”

Maria Rodriguez

Founder, PixelForge Games

“Best multiplayer architecture I've seen in any 2D engine. Server-authoritative with delta compression just works. No netcode nightmares, no desync issues.”

James Park

CTO, Mythic Realms

“We migrated from a custom engine and shipped our commercial launch 6 months ahead of schedule. The lighting engine and pet battle system alone are worth the price.”

Sarah Kim

Studio Director, Void Interactive

FAQ

Got questions?

Ready to build
your legend?

44 game systems, 82 database tables, a full isometric renderer, and a drop-in plugin SDK — all yours with full source code and no royalties.

Start Building Free→or explore the docs first

Build Your OwnIsometric MMO

One studio.Every system.