Asset Studioby UO WorkshopUO Workshop ↗

UO ASSET STUDIO / RELEASE HISTORY

What’s new.
What’s been fixed.

Follow the changes to your workshop, from new creative tools to the fixes that make everyday work easier.

Download the latest version ↓Read the complete guide →

44 documented versions · 187 changes · Newest first

ALSO UPDATED / CUSTOM CLASSICUO

Client Update 4 — 27 September 2026

Party and guild map tracking, personal rally and death markers, separate server switches and reliability fixes. The client page contains the Standard download, illustrated guide and verification notes.

Read the ClassicUO client updates →
v0.31.0Latest version

Classic UO landscapes, script recipes and ethereal mounts

Added

  • Save and reopen portable script recipes, and preview generated source and creation commands before saving.
  • Classic UO mountain edges with craggy rock faces, uneven ridges and separate bounded slope limits.
  • World overview Height, Slope and Shoreline / blends views, plus Terrain review with clickable inspection coordinates.

Improved

  • Raised terrain previews use square client terrain textures and optional TexTerr.def mappings, with artwork fallback when textures are absent.
  • Natural cave entrances use native black rock-mouth artwork and a clear dirt approach, with a trigger in front of the wall pieces.
  • Paths seek any reachable earlier clearing and avoid cutting diagonally through blocked shore corners.
  • The complete manual now has 71 pages covering the new controls.

Fixed

  • Sphere Rideable object mounts now mount directly from their backpack item and return that same item on dismount, without leaving a loose creature.
  • Generated mount helpers join related-content removal only when unchanged; external references and customized helpers remain protected.

471 unittests passed. Three sample exports and a full-size 7168 × 4096 terrain review passed. Connected-player Sphere checks cover mounting, dismounting, repeat clicks, denied mounting and cleanup. Custom shard hooks, death and restart still need shard-specific testing. Packaged startup remains unverified; source runtime, frozen archive and installer compilation were checked.

Release files & notes ↗
v0.30.1

Legacy UOP maps load correctly in Map Regions

Improved

  • Standard facet sizes are detected automatically, including 6144 × 4096 and 7168 × 4096 Britannia maps; custom maps retain manual dimensions.
  • Loaded dimensions are displayed above the terrain preview; the 68-page guide explains map loading.

Fixed

  • Corrected legacy UOP terrain chunk addressing, fixing the incorrect map-dimensions error for map0LegacyMUL.uop and other standard maps.
  • Accepted the standard optional trailing padding block while retaining checks for missing, truncated or mismatched terrain data.
  • Cancelling custom dimensions keeps the current preview and its coordinate scale unchanged.

450 unittests passed. All six standard client-map overviews and independent terrain samples were checked without changing the inputs. Packaged launch remains unverified; source runtime, GUI, frozen archive and installer compilation passed.

Release files & notes ↗
v0.30.0

A redesigned workspace and Sphere Map Regions

Added

  • Home task cards, permanent editor navigation and a searchable All tools page with 26 workflows.
  • Map Regions for Sphere: select, draw, move, add and remove AREADEF / ROOMDEF boundaries.
  • Guarded, safe, spell, recall, gate, teleport, PvP and other region-rule controls with reviewed script saves.
  • Appearance page with ten themes, Standard/Larger text and a panel-layout reset.

Improved

  • Editors remember optional Definitions and Script files panels; save and profile controls are grouped.
  • Tile imports now separate artwork previews from properties and animation; equipment stats use a compact layout.
  • The complete PDF and offline guide now cover 33 chapters across 68 pages.

Fixed

  • Restored and switched editor layouts keep useful panel widths on smaller windows.
  • Region saves preserve custom tags/events and encoding, with script conflicts checked before writes.

Map Regions targets Sphere only. Terrain is read-only; custom events, region ordering and final guard/travel behaviour require shard testing. Keep a covering world region and stop Sphere before saving. Packaged executable launch remains unverified; source runtime, GUI, frozen archive and installer compilation are checked.

Release files & notes ↗
v0.29.0

Static tile packs, ModernUO preview and better worlds

Added

  • Import static walls, floors and items from PNG/BMP folders or ZIPs, with optional subfolders, sorted previews and reviewed free-slot placement.
  • ModernUO preview script target for official 0.15.6.198, using native generated serialization and UOContent destinations.
  • Find area shortcuts for coast, forest, desert, snow, mountain, volcano and path previews.

Improved

  • Smoother biome boundaries and distance-aware river routing in generator version 2.
  • Tree spacing accounts for canopy size while keeping trunk and canopy pieces paired.
  • World exports report missing shoreline-art matches; the guide covers the new imports and target limits.

Fixed

  • Changed world settings now mark the preview outdated and require regeneration before export.
  • Non-dyeable C# armor no longer generates an unsupported Dye override.
  • Script workshop instructions and world summaries fit better in smaller windows.

ModernUO passed source and syntax checks; a full ModernUO build and shard testing remain required. Existing definition, sound-link, removal, house/deed and world entrance script workflows remain Sphere. Older world settings regenerate with the new rules; keep previous native exports for exact layouts.

Release files & notes ↗
v0.28.0

Sphere, RunUO and ServUO scripts

Added

  • Choose Sphere, official RunUO 2.x or ServUO pub57 when importing monsters, mounts, items, effects, clothing and weapons.
  • Choose one script target for a complete armor set, including whole-folder imports.
  • Generate scripts for artwork already installed through Workspace → Workshops → Generate server script.
  • C# templates include spellcasting, healing, taming, triggered effects, temporary summons, equipment bonuses and weapon hit effects.

Improved

  • Review the generated source, destination and GM creation command before saving. Check existing filenames and C# class names, including combined or restored queues.
  • Updated the complete guide to 65 pages with target-specific export instructions.

RunUO and ServUO both use C#, with separate templates for their APIs. Existing definition editing, sound-link editing, removal, house/deed and world entrance scripts remain Sphere workflows. Generated scripts still need gameplay testing on the chosen server.

Release files & notes ↗
v0.27.0

Creature behaviour and abilities

Added

  • Eight editable creature presets in Monster and Mount imports.
  • Configure damage, skills, resistances, normal spells, healing, taming, follower slots and food.
  • Add abilities with a trigger, percentage chance, cooldown, health threshold and range: spell effects, self-healing, custom attack visuals, sound, temporary summons or a compatible Sphere function.
  • Configure summoned creatures, quantity, living limit and lifetime, with cleanup when the summoner dies or is deleted.

Improved

  • Full generated-script review and an expanded creature-behaviour guide. Rideable objects retain their separate no-taming/no-feeding mode.
Release files & notes ↗
v0.26.0

Dungeons, caves and equipment bonuses

Added

  • Reserve a black off-world area for connected stone dungeons and natural caves.
  • Generate graded cave openings in the main map, paired interior locations and optional two-way Sphere entrance/return scripts.
  • Follow entrances and return locations in World Explorer.
  • Add weapon and armor stat bonuses or penalties, Luck, five resistances, combat modifiers, skill bonuses and percentage-based on-hit spells.
  • Copy a piece’s equipment effects to the rest of an armor set.

Improved

  • Real terrain elevation, slightly uneven ground and bounded slopes remain consistent between the explorer and exported map. Sea water stays at height zero.
  • Guide expanded to cover underground areas, sound replacement and equipment effects.

Generated maps are separate exports. Regions, spawns, loot and server activation remain separate work; Test Scene does not execute combat scripts.

Release files & notes ↗
v0.25.1Development release

World Explorer and current sound links

Added

  • Open the generated world in a separate, resizable explorer window.
  • Pan by dragging or using the keyboard, zoom with the mouse wheel, navigate with the minimap and jump to volcanoes, lakes and clearings.
  • See and listen to sounds already associated with an asset, including resolved creature inheritance.

Improved

  • Replace a selected sound link without adding a second command. A newly imported sound can keep the old shared audio available to other assets.
  • Scenery and grid switches help inspect terrain; the explorer draws nearby tiles as you travel.
v0.25.0Development release

World Generator

Added

  • Generate seeded continents, islands and archipelagos with deserts, icy regions, rivers, lakes, mountains, paths, trees and foliage.
  • Add volcanic cones and craters, adjust tree size/density and foliage, and paint biome regions.
  • Save generation settings, inspect native terrain previews and export a separate map set with overview, heightmap and checksums.

Improved

  • Terrain limits constrain elevation and neighbouring height differences; coastlines and biome boundaries blend through native transition artwork.
  • Water remains level, and trees avoid paths and restricted ground.

Fixed

  • Corrected map UOP output to use directly readable terrain chunks and the proper internal names for alternate map files.
v0.24.2Development release

Workspace sounds and MUL to UOP

Added

  • Attach sound directly from the visible Sound in UO panel above the Workspace preview.
  • Convert supported MUL art, gumps, sounds and terrain maps to UOP, alongside the existing UOP-to-MUL direction.
  • Convert High Seas multis with their matching housing and component companion files.

Improved

  • Sound attachment follows the asset shown in Workspace, independently of another open script.
  • Converters verify output in a new folder and preserve source files. Animations and separate metadata are outside this conversion workflow.
v0.24.1Development release

Sound attachments and checks before saving

Added

  • Attach an existing client sound or ready-made PCM WAV from a definition’s context menu or the Sound workshop.
  • Choose creature idle/notice/hit/hurt/death, item use/equip/unequip or supported function sound links, then listen and review.

Improved

  • Check destinations, relevant client archives and write access before creating backups or staging a save; check again before replacement.
  • Apply destination checks to direct script saves and backup restoration.
  • Save new sound data and its script link together while retaining existing script conditions and inheritance.
v0.24.0Development release

House Builder refinements and complete guide

Added

  • Automatic house-project recovery, Save project as and links to earlier compiled houses.
  • Material palettes, favourites, recent pieces, readable tile names, Line and Perimeter tools, placement previews, floor-height presets and editable selection properties.
  • Walk testing with keyboard or click-to-walk, stairs and nearby door interaction; checks for low headroom, unreachable floors and enclosed floor gaps.
  • The first comprehensive distribution guide, covering the complete application.

Improved

  • Saving or queueing a compiled house leaves its editable project open.
  • Compiled projects remember their house ID and script, allowing reviewed updates to the same house with changed-destination checks.

Fixed

  • Invalid house projects now report an error without replacing the current design.

Already placed houses retain their saved structure. Redeed and place a fresh house to apply structural changes.

v0.23.0Development release

House Builder and generated housing deeds

Added

  • Build with native floors, walls, roofs and decorations in an isometric editor.
  • Paint, rectangle, erase, select, copy/paste, move, adjust heights, undo/redo and toggle roof visibility.
  • Save editable house projects and exchange unhued CentrED CSV blueprints.
  • Compile a fixed native multi with its Sphere house/deed script through one reviewed save, supporting MUL and UOP multi files.
v0.22.3Development release

More equipment space and permission verification

Added

  • Opt-in Expand equipment capacity if needed in Armor set and Equipped appearance.
  • Extend the primary animation index with blank records for otherwise unused equipment IDs up to 2047 when existing capacity is exhausted.

Improved

  • Show expansion in the save review and retain original index length for recovery; existing animation mappings and paperdolls remain protected.

Fixed

  • Verify and restore the original Windows access rules after replacement, including older permission descriptors. This strengthens the permission-preservation fix from 0.22.1.
v0.22.2Development release

Import a whole armor set from a folder

Added

  • Open a set or collection folder and add every piece’s icon, VD and male/female paperdolls together.
  • Load all four files for an individual piece from its folder.
  • Recognise supported collection manifests and named piece subfolders.

Improved

  • Suggest free destination IDs while excluding queued pieces. Package reference IDs are not treated as installation destinations.
  • Keep every piece editable before the combined save review.
v0.22.1Development release

Preserve Windows file permissions

Fixed

  • Addressed client saves carrying temporary-file permissions onto the destination and losing normal folder inheritance.
  • Preserve existing access permissions through reviewed saves, script editing and recovery; record permissions for files that may need recreation.

Version 0.22.3 adds further verification for older Windows permission descriptors. The current installer includes both changes.

v0.22.0Development release

Complete armor-set imports

Added

  • Build a complete set from independently wearable pieces, each with its own inventory icon, animation and male/female paperdolls.
  • Allocate destinations and generate matching scripts under scripts/armor.
  • Review and save the whole set in one recoverable operation.

Improved

  • Check duplicate layers, IDs and identifiers, and exclude earlier pieces from automatic slot suggestions.

Each piece still needs its own artwork and equipped appearance. A single whole-suit VD cannot be split automatically into independent pieces.

v0.21.8Development release

Organised script folders

Improved

  • Place new generated scripts into relevant folders for monsters, mounts, items, clothing, weapons, effects and assets.
  • Register new resource paths when needed, while preserving existing script locations.
v0.21.7Development release

Equipment paperdoll preview

Added

  • Preview a selected equippable item on a small paperdoll.
  • Show selected equipment on the player model in Test Scene, linking the inventory item to its equipped appearance.
v0.21.6Development release

Ten interface themes

Added

  • Choose from ten interface colour themes.

Improved

  • Apply a theme throughout the app and remember the selected appearance between sessions.
v0.21.5Development release

Delete scripts from the directory

Added

  • Right-click a script in the script directory to review its deletion.

Improved

  • Include script removal in the recoverable save workflow, with directory/editor refresh and protection against changed files.
v0.21.4Development release

Send assets to Test Scene

Added

  • Right-click in Item Assets, Animations or Asset spaces and choose Show in Test Scene.
  • Open the selected asset directly in the scene without entering its ID again.
v0.21.3Development release

Place items without replacing the character

Added

  • Place selected items as separate scene props.
  • Room walls cover both back edges, with extra test walls for checking movement and overlap.

Fixed

  • Selecting and placing an item in Test Scene no longer needs to turn the character into that item.
v0.21.2Development release

Scene walls and walking directions

Fixed

  • Corrected the Test Scene wall presentation.
  • Aligned character facing with the direction of travel in the isometric scene.
v0.21.1Development release

Tidy Test Scene controls

Improved

  • Organised the sidebar into Preview and Room controls.
  • Show controls relevant to the selected asset kind and make scene setup easier to navigate.
v0.21.0Development release

The in-app Test Scene

Added

  • Preview characters, mounts, equipment, items and effects in a native isometric room.
  • Try eight directions, actions, playback speed, frame stepping, hue, lighting and zoom.
  • Move locally, test wall collision, place props, change floors/walls and export PNG snapshots.
  • Preview queued changes or external VD, PNG and GIF files before importing them.

A visual sandbox inside Studio; it does not run a server, execute gameplay scripts or write scene changes to game files.

v0.20.2Development release

Custom mounts, layout and removal fixes

Added

  • Import compatible 35-action custom mount VDs with the required mounted and unmounted poses.
  • Choose Rideable object for inventory-activated mounts without animal taming or feeding.
  • Review removal of a definition, its linked assets, or a wider animation-related group, while checking external references.

Improved

  • The installer detects an existing installation, reuses its folder and supports same-version repair.
  • Keep all three main panes usable at startup and save-review actions accessible when the details area needs scrolling.

Fixed

  • Read and preserve legacy script bytes that previously caused charmap decoding errors.
  • Distinguish item and creature references with the same numeric ID, reducing false removal blockers.
  • Clean up eligible empty .scp files and their exact resource registrations after removal; refresh the script directory.
  • Handle mount remnants from earlier partial removals, including linked figurine aliases, while retaining shared or externally referenced content.

Several follow-up builds kept the 0.20.2 version number. Their verified changes are collected here; unrelated references still require review.

v0.20.1Development release

Create mount icons from animation poses

Added

  • Choose an action, direction and frame from the mount animation as its shrink icon.
  • Trim transparent edges, mirror the pose and choose its maximum size without exporting an intermediate PNG.

Improved

  • Save the new icon, TileData and Sphere ICON link together in a separate free item slot.
  • Clear an old pose selection when switching to another VD.
v0.20.0Development release

Connected Workspace and workshops

Added

  • Connected Workspace and Studio tools for animation editing, layered previews, sounds, a visual Sphere gump designer and multiple script tabs.
  • Save/session recovery, project comparison, test copies, favourites and portable content packs.

Improved

  • Combine non-conflicting archive edits and reserve queued import IDs during automatic placement.
  • Persist drafts and queued recipes per project, show converted before/after images, cache thumbnails and resume bulk exports.
v0.19.0Development release

Bulk export and quick artwork replacement

Added

  • Bulk-export item artwork and animation frames to organised PNG folders with progress, cancellation and frame-alignment metadata.
  • Export complete MUL animation bodies as individual VD files.
  • Right-click item or gump previews to replace their artwork through the existing save review.

Modern UOP body animations export to PNG; their VD mapping is not guessed.

v0.18.1Development release

Save verification and file checks

Added

  • Check game files to inspect structure and identify mismatched editor/server UO folders without changing files.

Improved

  • Verify complete fixed-record copies, protect retained backups from overwriting later edits and improve preview-worker cleanup.

Fixed

  • Corrected quoted comments in equipconv.def, decimal Sphere item IDs, equipment gump reservations and mixed binary-preview folders.
v0.18Development release

Automatic free-space placement

Added

  • Automatically suggest compatible free destinations for item/effect frames, gumps, creature animations, mounts and equipment bundles.

Improved

  • Review the selected range, switch to manual IDs or find another free space, and recheck destinations before saving.
  • Require a complete compatible block instead of splitting an import or silently overwriting content.
v0.17Development release

Clothing and weapon imports

Added

  • Import clothing and weapons with inventory icons, TileData layers, equipped animation and male/female paperdolls.
  • Reuse an existing equipped appearance or import a compatible 35-action equipment VD.
  • Choose weapon families and edit combat properties, clothing layers, dyeability and armor values.

Improved

  • Review icon, paperdoll, animation coverage and generated Sphere script as one linked change.
v0.16Development release

Save controls, navigation and UOP conversion

Added

  • Save scripts, Save game files, Save All and a Pending changes queue.
  • Back/Forward navigation with Alt+Left and Alt+Right shortcuts.
  • Batch UOP-to-MUL conversion for supported art, gumps, sounds, maps and multis into a separate folder.

Improved

  • Checkpoint pending imports with sessions; prompt about unsaved changes before closing or switching profiles.
v0.15Development release

Continuous asset galleries

Added

  • Continuous scrolling galleries for item/animation spaces and gumps, with search and used/free filters.
  • Load more UOP animation bodies as browsing reaches the end of the current range.

Improved

  • Load nearby thumbnails through a bounded cache.
  • Simplify profiles to the server, client-data folder and optional client executable.
v0.14Development release

Shard profiles and installer builds

Added

  • Named shard profiles with create, rename, copy, remove and switch actions.
  • Linked-folder shortcuts and remembered startup profile.
  • Windows installer packaging with bundled runtime, Start menu entry, optional desktop shortcut and uninstaller.

Improved

  • Protect unsaved edits and retain the current profile if the new locations cannot be opened.
v0.13Development release

Mount shrink icons

Added

  • Choose an existing icon with search and thumbnails, or import a PNG/BMP into a free item slot.
  • Generate the Sphere icon/figurine links and save them with the mount and riding memory.

Fixed

  • Corrected UOP artwork imports that also update TileData in the same save.
v0.12.1Development release

Compressed gump previews

Improved

  • Start the gump browser with Used selected and improve platform-specific build checks.

Fixed

  • Decode Mythic-compressed UOP gumps that previously failed to preview.
  • Recognise compressed empty placeholders and include higher UOP gump IDs.
v0.12Development release

UO Asset Studio and visual asset spaces

Added

  • Introduced the UO Asset Studio name and neutral generated-script naming.
  • Visual Asset spaces with thumbnails, IDs, source selection and used/free candidates.
  • Dedicated Mount import with linked animation, riding memory, metadata and script review.
  • Compare hues across selected clothing/item artwork.

Improved

  • Double-click a definition to open its relevant asset viewer, with properties, references and script ready alongside it.
v0.11Development release

Gumps and hues

Added

  • Browse, search, preview and export native MUL/UOP gumps, and import image batches through save review.
  • Browse hue palettes, compare original/recoloured artwork and edit swatches, gradients and names.
  • Exchange UOFiddler hue text palettes, export hue lists and copy Sphere colour/gump helper lines.
v0.10Development release

Linked asset and Sphere script imports

Added

  • Guided Monster, Item and Effect imports with generated Sphere scripts.
  • Inspect slots, set identifiers/categories and review client assets and registered scripts together.

Improved

  • Validate compatible VD layouts, animation routing and destination references before a linked save.
v0.9Development release

Direct client editing and recovery

Added

  • Edit TileData and flags, import static artwork, create animated items and import creature animations.
  • Batch image ordering, consecutive or filename-based IDs, converted previews and replacement checks.
  • Recoverable multi-file saves with staging verification, optional retained backups, rollback and interrupted-save recovery.
v0.8Development release

Script creation and animation exports

Added

  • Create script folders and .scp files from the directory context menu.
  • Animation playback-speed presets and GIF export with frame alignment.
  • Guided Add item form with artwork preview, categories, identifier checks and script review.
v0.7Development release

Animation browsing and script directory

Added

  • Preview MUL/UOP body animations by action and direction, with playback, frame stepping, zoom and frame export.
  • Browse the script directory and edit whole script files alongside individual definitions.
  • Back up original scripts manually or before opening them for editing.

Improved

  • Protect unsaved edits during navigation and preserve script encoding and line endings.
Back to top ↑

YOUR NEXT UO PROJECT STARTS HERE

Bring the pieces together.

Artwork, animation, scripts, sound and worlds. One place to work.

Download for Windows

v0.31.0 · Windows 10/11 x64 · 16.7 MB