RealmCrafter - Самый мощный на данный момент движок для создания ММОРПГ! 
Возможности (англ):
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No programming language skills required when using the Standard Edition.
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Scripting language for you to customize your game further still.
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Source code available for advanced users and coders (requires using BlitzPlus programming language) for the ultimate in game customization.
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Easy to use editors to create and edit your game world.
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Low server system requirements.
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Server-side saving of player accounts.
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Modular engine construction.
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A MySQL Player Character Database: Allows you to read and process all character data with a multitude of languages (e.g. PHP, etc).
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Automatic update system keeps your players up to date with changes to your world.
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DM accounts allow players to become moderators without buying the engine.
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Integrated particle system with editor, for a variety of special effects.
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Comes with a large selection of animated models, textures, sounds and music to get started.
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Many standard MMORPG features built in, such as animal riding, item crafting, and more.
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Player vs. Player support: PvP can be turned on/off on a per-area basis.
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Support for secure trading between players.
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Up to 4,500 visual combinations per character with different genders, beards, hair, faces, clothes and add-on equipment.
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Sixteen player character models each with 50 animations such as Karate fighting, magic, swimming, and more.
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Players can have pets or henchmen.
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Merchants buy and sell items.
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Characters can walk, fly or swim around in your game world
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A variety of built-in screen effects to use as you wish.
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Players can buy houses to live in, and to store their items.
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Players can buy a house with a salesman NPC, and set up a shop selling their items, even while they are offline.
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Define your own attributes, skills, and damage types.
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Create up to 65,535 items for players to find, trade and use.
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Create virtual worlds with unlimited areas, allowing your world to be as large and detailed as you like.
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Allow players to create their own guilds, and send their guild members on quests.
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Completely change the look of your game GUI with the Interface Editor.
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Import your own models and animations with the Media Manager.
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MMORPG Chat system with typical chat commands and functions
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Create classes and races, or use a skill based system instead
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A robust monster and Non Player Character (NPC) Artificial Intelligence.
Движок очень прост в использовании, с ним разберётся ЛЮБОЙ пользователь. Имеет открытый исходный код!
Стоимость: 100$
Пиратку можете и не пытаться искать, можете попробовать демо версию!
Сайт: http://realmcrafter.com/
ЗЫ: Есл кто уже приобрёл сие чудо и работает с ним, просьба отписаться. Я лично недавно приобрёл и потихоньку подумываю о создании ММОРПГ ( http://anthares.ucoz.com/ )
Возможно в дальнейшем понадобится команда!
