There are four kinds of mods in Dawnsbury Days:

• Custom portraits and custom portraits with custom ring. You can subscribe to custom portraits using the Steam Workshop or you can add them manually to your game in the CustomPortraits and CustomPortraitsWithCustomRing subfolders in the main game folder. You can then use these portraits for your heroes.
  
• Custom encounters. You can subscribe to custom encounters or even entire encounter groups using the Steam Workshop or you can add them manually to your game in the CustomMaps subfolder. That subfolder also contains instructions on how to create your own custom encounter.
  
• Custom adventure paths. You can subscribe to custom adventure paths using the Steam Workshop or you can add them manually to your game in the CustomMaps subfolder. That subfolder also contains instructions on how to create your own custom adventure path. An adventure path is a string of encounters interspersed with rests, level ups and downtime.
  
• Custom code mods. You can modify Dawnsbury Days by adding additional ancestries, classes, feats, items, variant rules and more with code mods. You can subscribe to these mods using the Steam Workshop or add these manually to your game by downloading them into the CustomMods subfolder. Note that these mods have full privileges on your computer so you should only download code mods from sources you trust. Dawnsbury Days will also produce a warning the first time you load a new code mod from the Steam Workshop. Instructions on how to create these mods are in the CustomMods subfolder as well as on GitHub[github.com].

To open the game folder and see these instructions, right-click Dawnsbury Days in Steam, then select Manage and then Browse local files.

In addition to sharing mods on the Steam Workshop, you can share them also on NexusMods[www.nexusmods.com].

To create custom encounters or adventure paths, follow the steps in the readme file in the folder "CustomMaps" in the game's main folder.

Alternately, you can watch this video guide:

To add new ancestries, backgrounds, classes, feats, spells or other player options, you'll need to write C# code. Follow the guidance on my GitHub repo[github.com] for a step-by-step guide.

Alternately, you can watch this video guide:

You can upload custom portraits, custom encounters and encounter groups and code mods to the Steam Workshop so that other players can easily subscribe and play with that content.

To do so, download the game, then right-click the game in Steam, choose Manage, then Browse local files, then follow the step-by-step instructions in the readme file in the 'Steam Workshop Uploader' subfolder.

If you want to share your mod with others, such as on the Steam Workshop, and your mod contains content that you only have permission to distribute through the Open Game License or the through the ORC License, you must distribute a copyright notice alongside your mod. To do so, create your own HTML file based on the OGL template[github.com] or the ORC template[github.com], and add that file into the root folder of your mod (just outside the folder CustomMods).

See the subfolder "Steam Workshop Uploader" in the game main folder for a text file that explains more details on this.

If you need help with this, feel free to join the #mod-support channel on the Dawnsbury Discord server to ask for advice.

Portraits, maps, encounters and code mods created with the assistance of generative artificial intelligence are not allowed on the Dawnsbury Days workshop.

You can get support with all types of mods in the #mod-support channel on the official Discord server[discord.gg].

If you're creating a code mod, you may also find the GitHub repository[github.com] helpful: it contains conceptual documentation as well as example mods.

You can find more examples of code mods on JoeZeiler's GitHub[github.com] and on Danni's GitHub[github.com].