Network RPG Builder MMO game maker

Alpha version

Make your own isometric multiplayer RPG: a map editor, a game client and a game server, in one package.

Network RPG Builder is a toolkit for building small networked role-playing games. You design the maps, classes, monsters, items and events in the editor, then players connect to your server and play together in the same world.

What’s in the box

• Map editor. Paint ground, blocks, decor and roofs on three layers, with autotiles, water, collision and stacked walls. Or generate a map in one click: Town, Cave, Forest or Desert, with a seed so the same settings always give the same map. You choose the number of monsters and chests scattered across it.
• Event editor. Place chests with gold and up to 12 items, shops with their own stock and buy and sell prices, monsters, teleports, NPCs and signs.
• Party Editor. Make up to 8 playable classes. Each one has eleven main stats and its own growth per level. Pick a sprite for each class from the picture library.
• Monster Editor. Give monsters the same main stats as characters, plus drops, pictures and sounds.
• Item Editor. Weapons, armour and other items with stat bonuses.
• Game client. Log in, create a character, pick a class and walk around the world with WASD or by clicking. Fight monsters, open chests, buy and sell in shops, equip gear, drop and pick up items, and chat with everyone online.
• Game server. Runs on your PC. Players connect by address. Accounts are stored with secure password hashes. The server bundles its own Node.js, so there’s nothing extra to install.

How combat works

Every character and monster has the same main stats: Strength, Dexterity, Agility, Luck, Intelligence, Wisdom and Vitality . They decide hit chance, dodge, critical hits, damage, and how many hit points and magic points a creature has. Equipment bonuses change them in every fight.

Current state (alpha)

This is an early version, so expect rough edges.

• Spells can be designed, but you can’t cast them in the game yet.
• Some editors are still being built.
• The game is for playing over a network with friends. It isn’t a finished engine for large public servers.

Feedback and bug reports are very welcome. Tell us what you’d like to make first!

Requirements (estimate)

• Minimum: Windows 10 64-bit, 4 GB RAM, dual-core CPU at about 2 GHz, a GPU that supports WebGL 2, 1 GB of free disk space.
• Recommended: Windows 10 or 11 64-bit, 8 GB RAM, four cores or more, any card with hardware acceleration, an SSD, 2 GB of free disk space.
• For development work: about 16 GB RAM.