Old School Ops
GoMMO Studio v1.3.0

Content Creation, Game Data For Every Game, DragonSoul, MMO World Editor 2

Released 15 October 2026

Content creation, game data for every game, DragonSoul support and the second MMO World editor.

Features

  • Content creation. Create makes a new monster, NPC, skill, item or quest in one step, writing every client and server table it needs as one save you can take back, and Check shows the plan without writing anything.
  • Quest and reference graph editing. Drag a link in the graph onto another row to change what it points at, and add a quest after any quest in a chain.
  • Loot and shop editors. Edit a monster's drops with the odds updating as you type, and a merchant's stock slot by slot.
  • Item, monster and store forms. RF Online rows open as forms that add and remove drops and goods, with each action one undo step.
  • Gate to Heavens game data. Every Gate to Heavens content table opens in the Game Data grid, saved through the game's own validator and compiled into the client's tables.
  • World of Kung Fu game data. World of Kung Fu's tables, quests included, edit in their original formats with the client copies kept in step.
  • DragonSoul game data. DragonSoul's content tables edit in the Game Data grid, with the client's copies saved beside them.
  • More RF Online versions. Game data, new items, new creatures and glows work on Secret of Holystone, Red Army and Giga.
  • New Gate to Heavens items. Import your own weapon or armour as a new Gate to Heavens item, with its icon rendered into the item sheet.
  • Gate to Heavens effects. Edit, play and save Gate to Heavens effects and skill effects, and make new ones from any effect.
  • RF Online spell effect lists. A new spell script, mesh or track gets its row in the client's effect lists, so the game finds it.
  • World of Kung Fu models. Edit, import and send World of Kung Fu models to Blender, and edit their effects and clip markers.
  • DragonSoul models. View, animate, edit and import DragonSoul characters, monsters and items, held weapons included, and make a new weapon.
  • DragonSoul maps. Open, edit, paint and install DragonSoul maps, with lights, region names, and spawns, NPCs and teleporters from the linked server, and make a new map.
  • DragonSoul archives and sounds. Browse and repack DragonSoul's .aup archives, and play and replace the sounds inside them.
  • Large MMO World terrain. MMO World terrain up to 4097 vertices a side, drawn in chunks, with holes and up to eight tiled texture layers.
  • Foliage brush. Paint trees, grass and rocks with density, spacing, random scale and slope limits.
  • Roads, rivers and water. Draw a road or river along a curve that shapes and paints the ground, and place water.
  • MMO World lighting and navmesh. Bake lightmaps for terrain and props, and build a navmesh for server pathing.
  • STU-006: Object groups. Ctrl+G joins the selection into a group that selects, moves and copies as one, and Ctrl+Shift+G ungroups it. Reported by Rikkimaru.
  • Interface conventions. Gate to Heavens windows are checked against the client's own conventions, with templates for new windows and controls and a Fix button.
  • .gommomod packages. Export a project as a signed .gommomod, and open or apply one, with removal putting back what it replaced.
  • Check in client. After Install, the RF Online Golden Age client goes to the edited spot and its pictures show beside Studio's own.

Improvements

  • Terrain sculpting on RF Online and World of Kung Fu. The sculpt brushes work on RF Online and World of Kung Fu maps as well as MMO World maps, and props and objects stay on the ground.
  • RF Online game data labels and pickers. Columns show their label, help and unit, flag and list cells show names, and a referenced row is picked by name.
  • Imported RF Online items. Import as a new item always writes the server's row as well as the client's.
  • Placing objects by position. An object placed at a map position lands on the floor you meant, not on the roof or arch above it.
  • Opening RF Online clients. Scanning an RF Online client's catalogue is several times faster.
  • Automation. Every new editor action has a matching tool on Studio's MCP endpoint.

Fixes

  • STU-006: Recent projects. The remove button on a recent project opened it instead of removing it. Reported by Rikkimaru.
  • STU-006: Wall point picking. Clicking a wall's first point picked the whole wall, and redrawn wall points and props landed on the wall instead of the terrain behind it. Reported by Rikkimaru.
  • STU-007: RF Online loot tables. Golden Age's loot slot list and a monster's drops never opened. Reported by facelessnm.
  • RF Online prop import. A model exported from the viewer came into a map ten times too large.
  • Gate to Heavens animation scripts. Scripts with non-English characters in their names were read wrongly.
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