About Silt Strider & Game Engine Mechanics
About Silt Strider Tools
Character planners and calculators for Morrowind
Disambiguation
Silt Strider Tools (siltstrider.tools) is an independent web companion, character builder, and game calculation toolbox for single-player The Elder Scrolls III: Morrowind and OpenMW.
It is completely separate and not affiliated with the multiplayer roleplay server project Tales from Nirn: Silt Strider on TES3MP. If you are looking for their persistent roleplay server and modpack, visit siltstrider.com.
Silt Strider is an unofficial fan project. It is neither directly nor indirectly affiliated with, endorsed by, or sponsored by Bethesda Softworks, Bethesda Game Studios, or ZeniMax Media.
It exists as a free reference and planning aid for players of The Elder Scrolls III: Morrowind. It is not intended to infringe upon the copyrights of Bethesda Game Studios or its parent and affiliate companies, and reproduces no game assets, art, audio, or text.
Races, classes, birthsigns, skills and gear are checked against data read straight from the game files: Morrowind, Tribunal and Bloodmoon, and for Tamriel Rebuilt, Tamriel_Data and TR_Mainland (26.08 Poison Song). Restrictions and objectives are human curated.
The Elder Scrolls III: Morrowind® (Tribunal, Bloodmoon) was developed by Bethesda Game Studios LLC, a ZeniMax Media company. ZeniMax, The Elder Scrolls, Morrowind, Tribunal, Bloodmoon, Bethesda Softworks and related logos are registered trademarks or trademarks of ZeniMax Media Inc. in the US and/or other countries. All Rights Reserved.
System Accuracy & Game Mechanics
Calculations across Silt Strider follow engine source code transcribed from OpenMW 0.51.0 (apps/openmw/mwmechanics/). Game math uses the engine's own algorithms rather than wiki rules of thumb:
- Alchemy: Mortar and pestle quality sets base potion strength and duration; the Retort amplifies positive effects, the Alembic suppresses negative side-effects, and the Calcinator magnifies all effect magnitudes. Brew chance scales directly with Alchemy skill, Intelligence, and Luck.
- Level Progression: Health gains on level-up are non-retroactive, calculated as 10% of the new Endurance with fractions kept (Endurance / 10). Starting Health stays unchanged. Governing skill increases generate 2× to 5× attribute multipliers (10 skill increases for a 5× multiplier) up to the 100 attribute cap.
- Travel Routing: A shortest-path search finds the fewest legs, the cheapest fare or the fastest trip across silt striders, boats, river striders, and Guild Guides. Fares and travel hours follow OpenMW's travel window and your character's haggling, and the search accounts for Mages Guild membership and rank requirements.
- Spellcraft: Magicka costs derive from effect base cost, magnitude, duration, area, and range. Casting success chance accurately evaluates governing magic skill, Willpower, Luck, and fatigue state.
- Enchanting: Enchantment point capacity, soul gem charges, and constant effect thresholds (strictly requiring 400+ soul capacity, such as Golden Saints or Ascended Sleepers) match engine formulas, alongside barter pricing and self-enchant success chance.
Multi-World Coverage & Privacy
OpenMW only. Tested with vanilla Morrowind, Tamriel Rebuilt (TR), and TR + ARCE. Other mods are untested; imported data and calculations may be incomplete or inaccurate. Original Morrowind .ess saves are not supported. You can still enter your race, class, birthsign and skills manually in the Character Builder.
Full data pipeline support is provided for The Elder Scrolls III: Morrowind (Tribunal, Bloodmoon), Tamriel Rebuilt 26.08 (Poison Song), and ARCE.
Opening an OpenMW save (.omwsave) parses it in your browser without uploading it. Choosing to save it to Cloud Vault sends its parsed character data to our service. Share links contain the character information you choose to share. See our Privacy Policy for details.
Credits
Typeface: Pelagiad by Isak Larborn, used under the SIL Open Font License 1.1.
Game data: read from Morrowind.esm, Tribunal.esm, Bloodmoon.esm, Tamriel_Data.esm and TR_Mainland.esm. References: the Unofficial Elder Scrolls Pages (UESP) and tamriel-rebuilt.org.
Tamriel Rebuilt and ARCE are community projects by their respective teams; Silt Strider supports them but is not affiliated with either.
Colophon
Made by LowGraph. The site's code is open source under the GNU Affero General Public License (AGPL-3.0-or-later). View the code on GitHub.
The code licence does not cover game or mod data: those rights remain with Bethesda Softworks and the Tamriel Rebuilt, Project Tamriel and ARCE teams. Pelagiad keeps its own font licence. The Silt Strider name, logo and social card image are not licensed for reuse.
The site's code was written with AI assistance. Builds and gear recommendations are checked by script against data read from the game files. Restrictions and objectives are human curated.
Bugs & Corrections
Report a bug by email, or write to tmarcalferreira@gmail.com. Include the tool, selected profile, steps to reproduce, browser, and any error reference. No email app set up? Copy the address and send the report through your usual email service.
Support
Hosting and tools cost roughly $60/year. If the site is useful to you, a donation helps cover it: Ko-fi.