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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 v0.3.1 Gate to Heavens Classic Primary v0.3.1
RF Online
RF Online: Dragonborn Primary v0.3.1 RF Online: Age of Patron Maintained v0.2.0 RF Online 1.5 Primary v0.3.1 RF Online: Golden Age Primary v0.7.0 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 v0.2.0
DragonSoul
DragonSoul Alpha v0.1.0
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]GoMMO Studio v1.2.0 is out[Fixed]RF455-073 RF 4.55 : Chip War, the winning race can kill its own Holy Stone Keep… reported by cybercyber[Idea]New idea IDEA-7: No client download option available. by DT[Forum]New thread: Ideas (Feature Requests),. UX Updates by Ron[Level]cybercyber reached level 10[Badge]kongzboy earned Said something[Dev]460 commits to the framework this week[Release]GoMMO Client Patcher v1.0.0 is out[Fixed]RF455-072 RF 4.55 : Chip War, the losing races can still mine after the war reported by cybercyber[Idea]New idea IDEA-6: Expand Headless Client Support for Race Leadership, Guilds, and Game … by NeedCoffee[Forum]New thread: RF 1.5B disconnect after 60 seconds in game by SIGMA[Level]OSO AI reached level 10[Badge]Ron earned Worth reading[Dev]Gate to Heavens Classic: 3 commits since v0.3.1[Release]GoMMO Studio v1.1.0 is out[Fixed]RF455-071 RF 4.55 : Chip War, the win is recorded twice per war, and win streak… reported by cybercyber[Idea]New idea IDEA-5: Translator feature by accretianz[Badge]DT earned Said something[Dev]Gate to Heavens Modern: 1 reported bug fixed in 117 commits since v0.3.1[Release]RF Online: Dragonborn v0.3.1 is out[Fixed]RF455-070 RF 4.55 : Chip War, a race can destroy its own Control Chip and is an… reported by cybercyber[Idea]New idea IDEA-4: Multitab Feature by accretianz[Badge]ImI 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 v0.1.0
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] GOMMO-001 OSO AI moved it to Fixed: GoMMO Client v0.2.1 bugs and possible enhancements

[] [Bug] RF2232-488 OSO AI moved it to Fixed: Support officer buffs are not activating.

[] [Idea] IDEA-6 NeedCoffee suggested it: Expand Headless Client Support for Race Leadership, Guilds, and Game Events

[] [Bug] RF455-070 OSO AI replied: RF 4.55 : Chip War, a race can destroy its own Control Chip and is announced as the winner

[] [Bug] RF455-071 OSO AI replied: RF 4.55 : Chip War, the win is recorded twice per war, and win streaks are reset at every battle start

[] [Bug] RF455-073 OSO AI replied: RF 4.55 : Chip War, the winning race can kill its own Holy Stone Keeper

[] [Bug] RF455-072 OSO AI replied: RF 4.55 : Chip War, the losing races can still mine after the war

[] [Bug] STU-006 Rikkimaru reported it: Some bugs Studio.

[] [Bug] RF455-074 cybercyber reported it: RF 4.55: siege kits give none of their stats (ATK %, hit, HP/FP, defence, dodge, range): the server loads only 5 kit columns

[] [Bug] RF455-075 cybercyber reported it: RF 4.55: MAU attacks always hit one target (no Catapult area hit, no Goliath AoE): the part loader drops m_nEffectGroup

[] [Idea] IDEA-7 DT suggested it: No client download option available.

[] [Bug] RF455-076 cybercyber reported it: RF 4.55: Cora Animus stop at Lv50, use no FP after summoning, and have no Paimon taunt or Hecate stun

[] [Bug] RF455-077 cybercyber reported it: RF 4.55: Communion Crystals do nothing for an animus, and nothing in the game gives one

[] [Bug] RF455-078 cybercyber reported it: RF 4.55: no Lv70 (Patron) gear can be crafted, because nothing gives the three High crystals

[] [Bug] RF455-079 cybercyber reported it: RF 4.55: items stack only to 99; since 4.151 the limit is 200

[] [Bug] RF455-080 Dave reported it: ASPD Decreased

[] [Bug] RF455-081 cybercyber reported it: RF 4.55: daily (repeatable) quests can be done only once per character, never again after 24 h

[] [Bug] RF455-082 cybercyber reported it: RF 4.55 v0.3.1: race council members can't equip council armour (the server never sends the seat state bits)

[] [Bug] RF455-083 cybercyber reported it: RF 4.55 v0.3.1: race leader "wave" skills buff only the caster (the link effect never reaches allies)

[] [Bug] RF455-084 cybercyber reported it: RF 4.55: three premium pass perks are missing: login rentals, hourly time tickets, and the coupon rewards at the Hero

[] [Bug] RF455-085 cybercyber reported it: RF 4.55: the magnet stone (Magnetic Jade, 地磁靈石) does nothing: no auto-loot, its effect code 103 is never read

[] [Bug] RF455-086 cybercyber reported it: RF 4.55: the NPC buff vendors are in the data and the server can sell their buffs, but none is placed in the world

[] [Bug] DS-003 Orion13 reported it: Mounts don't work.

[] [Bug] RF455-087 BlaBlaName reported it: RF 4.55: Grade and Subgrade player accounts

[] [Bug] RF455-088 BlaBlaName reported it: RF 4.55: Client<-> Server

Sign in to post on the forum and report bugs. Forum
Latest dropsChangelog
Game releaseTool releaseRelease candidate
Who is here
Members81
Active this week70
Posts374
Bug reports116
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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