version.json is a required file for all mods in Remixed Dungeon. It contains metadata about the mod that the game uses to properly load and manage the mod.

 {
   "version": 6,
   "name": "Cool Mod Name",
   "author": "Proud Mod Developer",
   "description": "Detailed mod description",
   "url": "https://wiki.nyrds.net/",
   "hr_version": "version 6!",
   "rpd_version": 610
 }

• version (integer, required) - Machine readable mod version, used for update checks
• name (string, optional) - Mod name as displayed to the player; defaults to directory name if not specified
• rpd_version (integer, optional) - Remixed Dungeon version required to run the mod; if not specified, defaults to 0
• author (string, optional) - Mod developer name as displayed to player; defaults to “Unknown” if not specified
• description (string, optional) - Mod description as displayed to player; defaults to empty string if not specified
• url (string, optional) - Clickable link to developer's site; defaults to empty string if not specified
• hr_version (string, optional) - Human-readable version as displayed to player; defaults to string representation of “version” value if not specified

• The game checks for the existence of version.json in potential mod directories
• Only directories containing a valid version.json file will be loaded as mods
• The “rpd_version” field is used to determine compatibility with the current Remixed Dungeon version
• A mod is considered compatible if its rpd_version is less than or equal to (current version code % 2000)
• The “version” field is used to check if the installed mod is outdated compared to the online version

• Information source: Java classes ModDesc.java and Mods.java
• Field definitions and defaults: Extracted from the fromJson() method in ModDesc.java
• Compatibility logic: Extracted from the isCompatible() method in ModDesc.java
• Last updated: December 2025, source: Remixed Dungeon 1.9.3

• Java: ModDesc.java
• Java: Mods.java

• Mods - Overview of modding system
• Getting Started with Modding - Tutorial for creating mods
• Modding Quick Reference - Reference for mod creation