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Old School Ops presents

GoMMO

Framework

The MMORPGs we grew up on, back online. Every server here is written from scratch on one Go framework and speaks the original client byte for byte. Run your own world, mod it with GoMMO Studio, or play on ours once our servers are back up.

Choose your world Run your own server What is GoMMO
Select world11 worlds
Gate to Heavens
Gate to Heavens Modern Alpha v0.3.2 Gate to Heavens Classic Primary v0.3.2
RF Online
RF Online: Dragonborn Primary v0.5.0 RF Online: Age of Patron Maintained v0.2.1 RF Online 1.5 Primary v0.3.2 RF Online: Golden Age Primary v0.8.1 RF Online: Secret of Holystone Maintained v0.1.6 RF Online: Red Army Maintained v0.1.9 RF Online: Giga 4 Part 2 Maintained v0.3.9
World of Kung Fu
World of Kung Fu Alpha v0.2.1
DragonSoul
DragonSoul Alpha v0.1.4
No public servers while we rebuild our hosting. Every world ships as a bundle you can run. Downloads
Now showing Gate to Heavens · Liberty Heaven
[Release]DragonSoul v0.1.4 is out[Fixed]RF455-135 The premium pass causes the ranged weapon's attack speed to be reduce… reported by intip[Idea]New idea IDEA-14: put an auto attack by arlo[Forum]New thread: GATE TO HEAVENS SUGGESTIONS by arlo[Level]BlaBlaName reached level 10[Badge]arlo earned Said something[Dev]460 commits to the framework this week[Release]World of Kung Fu v0.2.1 is out[Fixed]RF455-134 RF 455 Beelzebub Hedgehog Tower: Damage and display anomalies reported by le[Idea]New idea IDEA-13: Support for Custom Web Interfaces and Multiple Languages by BlaBlaName[Forum]New thread: RF AoP 4.15 - 3rd Party Files for Research by Killerwoody[Level]cybercyber reached level 20[Badge]daxrao found a secret badge[Dev]Gate to Heavens Classic: 3 commits since v0.3.1[Release]Gate to Heavens Classic v0.3.2 is out[Fixed]DS-016 Dragon soul shuts down suddenly reported by berat[Idea]New idea IDEA-12: Complete client by 1511747693[Forum]New thread: MAU Unit ini by Killerwoody[Badge]daxrao earned Said something[Dev]Gate to Heavens Modern: 1 reported bug fixed in 117 commits since v0.3.1[Release]Gate to Heavens Modern v0.3.2 is out[Fixed]DS-018 All the Emoticons in the "Alternate Actions" tab don't work reported by Orion13[Badge]intip earned Said something[Dev]RF Online: Dragonborn: 12 reported bugs fixed in 4 commits since v0.2.0
The worlds

4 families. One engine room.

Each family is one original game, and each version of it is its own server, because the client changed between them.

Eight kingdoms · 1 version

DragonSoul

A fantasy MMO of eight warring kingdoms, with guilds, mounts, pets and a weekly nation war.

DragonSoul v0.1.4
The framework

What every world is built from

A fix to the core reaches every game, and a game added later starts with all of it in place. Game logic, opcodes and content stay with each game.

Shared Accounts

Core packagepkg/account · pkg/auth
  • One accounts database shared by every game on a server
  • Email login, argon2id password hashing
  • Staff levels granted per game; a ban blocks the account everywhere
  • Gate to Heavens and RF servers can sign players in with their oldschoolops.com account
"Made once. Used in every world."

SQLite and MySQL

Core packagepkg/database
  • SQLite by default, nothing to install
  • MySQL for production
  • One schema; the SQLite form is derived from it at run time
  • A server creates a missing or empty database on first start
"Unzip, run, and the tables are there."

Protocol Layer

Per familygames/*wire
  • Packet framing, ciphers and codecs, one package per game family
  • Opcodes and struct layouts live with each game
  • Every message matches the original client byte for byte
"Never trust a version number."

Build Isolation

Build ruleverify-split
  • Each game binary holds no code from another game
  • One gameserver process per game, serving all its worlds
  • Windows and Linux x64
"What one world breaks stays in that world."

Lua Scripting

Scriptingpkg/script
  • A sandboxed Lua host with instruction and time budgets
  • A verb set per family: RF dungeons, Gate to Heavens NPC conversations
  • Content is .lua files in the server folder, changed without recompiling
"Write a script, not a patch."

Two-Layer Testing

Testingtest · soak
  • Rule tests, each on its own in-memory server
  • A live-world soak under a crowd of bots
  • Both must pass before any release
"Nothing ships that the bots could break."
Activity

What happened in the world

Releases, forum threads and bug reports in one channel, the way a game's chat window shows everything at once.

World chatFull history

[] [Bug] RF15-143 OSO AI moved it to Closed: Dungeon Key that bought from NPC was error

[] [Bug] RF15-139 OSO AI moved it to Response Required: Debug NPC?

[] [Bug] RF15-140 OSO AI moved it to Response Required: NPC Mount and Max Money value

[] [Bug] DS-013 OSO AI moved it to Fixed: Skill Points disappear when you log out.

[] [Bug] RF2232-496 OSO AI replied: v.0.8.0 Grenade Launcher, Tower, MAU Booster SP

[] [Bug] RF455-116 OSO AI replied: Standard lvl 65 wepon causes force close when equiping

[] [Bug] RF15-146 OSO AI replied: Tower Related

[] [Bug] RF15-145 OSO AI replied: Mining

[] [Bug] RF15-144 OSO AI replied: Problem on check item

[] [Idea] IDEA-12 Outspacedev commented: Complete client

[] [Idea] IDEA-13 BlaBlaName suggested it: Support for Custom Web Interfaces and Multiple Languages

[] [Bug] RF455-129 OSO AI moved it to Fixed: FireGuard Authentication Fails After Game Restart Due to Duplicate Authentication State

[] [Bug] RF455-130 OSO AI moved it to Fixed: Expired Premium Items Remain in Inventory Until Character Restart

[] [Bug] RF455-131 OSO AI moved it to Fixed: NPC Item Sales Do Not Award Both Race Currency and Gold (Platinum)

[] [Bug] RF455-132 OSO AI moved it to Fixed: %pass quest Command Does Not Grant Follow-Up Quests

[] [Thread] daxrao replied: Quick RF progress update · RF Online

[] [Bug] DS-018 OSO AI moved it to Fixed: All the Emoticons in the "Alternate Actions" tab don't work

[] [Bug] DS-016 OSO AI moved it to Fixed: Dragon soul shuts down suddenly

[] [Bug] RF455-134 OSO AI moved it to Fixed: RF 455 Beelzebub Hedgehog Tower: Damage and display anomalies

[] [Bug] RF2232-494 OSO AI replied: Soul Eater Lv.55 Keen Talic +7 make you force close when equiped

[] [Bug] RF455-135 OSO AI replied: The premium pass causes the ranged weapon's attack speed to be reduced.

[] [Bug] RF455-133 OSO AI replied: RF 4.55: empty combine recipes, Halloween weapons, the Level 50 Armor Set Coupons, and the self-select vouchers

[] [Thread] arlo started it: GATE TO HEAVENS SUGGESTIONS · Gate to Heavens

[] [Idea] IDEA-14 arlo suggested it: put an auto attack

[] [Bug] DS-017 Orion13 replied: The "Energy Pills" Event can't be completed on Map 10004

Sign in to post on the forum and report bugs. Forum
Latest dropsChangelog
Game releaseTool releaseRelease candidate
Who is here
Members134
Active this week89
Posts673
Bug reports198
Tools

GoMMO Studio

Open a game client and edit its world. Maps, models, spells and textures for every game on the framework, in one window, with an Install step that writes the client and server files and keeps backups.

  • Map editor with walk grids, spawns, lighting and a problems list
  • Model viewer that dresses characters in real items and plays every animation
  • Texture recolour, packs, and screenshots or turntable GIFs at 1080p
  • Works on Gate to Heavens, RF Online and World of Kung Fu clients
Get GoMMO Studio
GoMMO Studio editing the Bellato map from RF Online: Golden Age
Self-host

Run your own world

A release bundle has the server, its data and a fresh database. Nothing else to install.

  1. Download a release

    Pick a game and a version from Downloads.

  2. Unzip it anywhere

    SQLite is the default, so the databases build themselves on first start. Switch to MySQL when you need it.

  3. Run the server

    One process serves every world for that game. Point the client at it and log in.

DownloadsInstalling guide
gameserver.exeexample start-up
> gameserver.exe
settings.cfg found in .\
database sqlite (default)
gommo_accounts provisioned
game database provisioned
game data loaded
listening on the game port
ready. waiting for players
Press start

One account. Run it, mod it, play it.

Your Old School Ops account covers everything here: the downloads, the docs, the forum and bug reports today, and logging in to our game servers once they are back up.

Operate

Download a server bundle for any game, read the setup docs, and report what breaks so the fix lands for everyone.

Mod

Edit maps, models, spawns and textures in GoMMO Studio, then install the changes into your own client and server.

Play

Log in to our public servers with the same account when they return, and follow every release on the forum until then.

Create an account Get a server bundle

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