Modding Tools

Modding Websites

• Isaac Blueprints : Collection of Modding tutorials, blueprints and helpful tools
• Modding Of Isaac Wiki : Wiki that contains Wikis for Isaac Mods

General

• Basement Renovator : Powerful and intuitive Level and Room Editor
• Anm2ed : A reimplementation of The Binding of Isaac: Rebirth's proprietary animation editor. Manipulates the XML-based ".anm2" format, used for in-game tweened animations. Developed by ShweetsStuff
• Backdrop Previewer : Tool to preview Room-Backdrops
• Log Viewer : Tool to display a live - view the Logfile
• Rebirth Item Tracker : External tool that displays Item-informations about your current run
• AB+ Mod Merger : A Python script to merge AB+ Mods. This can improve performance.
• Anm2 Scaling Helper : Scales .anm2 files with a specific factor. Useful to create HD sprites. (Source)
• Drawstic Online : Online tool to edit BoI sprites quickly
• Color Usage Visualizer : Interactive 3D tool to display color usage frequencies in Isaac Sprites
• Config & Mod Management Tool : UI to edit the game config and enable/ disable mods or modpacks
• PC -> Console Mod Converter: Converts Rebirth and Afterbirth mods to be useable on consoles. DOES NOT WORK FOR AFTERBIRTH+ MODS!
• Text Sprite Generator: Automatically generates Character- and VS Screen text sprites
• Character Sheet Generator: Tool that automatically generates teleport and Missing No. Sprites for your character's spritesheet
• Repentance Run Tracker: Tool that shows and records extensive informations about your runs.
• EzItems: Tool to automatically write a mod that is able to rename items and trinkets. Both their name and description are supported.
• Skin Color Variant Generator: Tool to automatically generate skin color variants of costume sprites

Coding Tools

• Visual Studio Code : Free Coding environment
  • Plug-In: "Lua" Provides a lot of QoL features, syntax Check, Reference checks, IntelliSense, Auto complete, ...
  • Plug-In: Binding of Isaac Lua API Auto-complete for Isaac API Enums, functions and features
• Notepad++ : Free Coding environment
• ZeroBrane Studio : Free Coding environment
  • Plug-In: Afterbirth-API-for-ZeroBrane (outdated) Autocomplete for Isaac API functions and enums
• IsaacScript : Coding mods easily using Typescript

Afterbirth +

• Savegame Editor : Savegame Editor for AB+

Afterbirth

• Missing Hud 2 Overlay : Displays Stats of the character on the left side of the screen
• Rick's Unpacker : Tool to extract the Game files
• Savegame Editor : Savegame Editor for Afterbirth
• Basement Renovator : Level / Room Editor
• simple mod loader : Tool to install and manage Mods
• Challenge Creator : Tool to create custom challenges
• Custom Challenge Launcher : Creates Custom gameplay scenarios
• Itempool Editor+ : Itempool editor with graphics based UI
• Itempool Editor (alternative) : Itempool editor with text based UI

Rebirth

• Missing Hud 2 Overlay : Displays Stats of the character on the left side of the screen
• Rick's Unpacker : Tool to extract the Game files
• Basement Renovator : Level / Room Editor
• simple mod loader : Tool to install and manage Mods
• Itempool Editor+ : Itempool editor with graphics based UI

Binding of Isaac (Flash Version)

Spider Mod

Download Link: Spider Mod v09.1 for WotL 1.48

Extended version of the default game with extra features, bugfixes and modding support. Its a standalone application and does work without having the main game installed.

This does not contain or work with the Eternal Update!

Video Tutorial

Here is a video tutorial on how to install Spidermod: https://www.youtube.com/watch?v=E0vagIRSgPc

Install instructions (outdated and incomplete)

1. Download and unpack the zip file in any folder and directory you want.
2. You may need to install Adobe Flash Player, for it to work. This can be a bit complicated because Flash Player is no longer access and downloadable because Flash is no longer supported.
3. You may also need to set your Windows system time back to 2018, since Flash player is no longer supposed to work on newer systems
4. Start the "Binding of Isaac WOTL SpiderMod.exe" file to play the mod

If the window doesn't display anything or you have some "Class not registered" error, download Adobe Flash Player for Internet Explorer. [!PUT LINK HERE!]

Community Remix mod

Download Link: Community Remix mod

A mod that adds a lot of new content to the game. Requires Spider Mod to work!

Installation instructions

1. Download and unpack Spider Mod
2. Download Community Remix mod
3. Replace .../Spidermod/Data/IsaacSpiderMod.isc with the downloaded Community Remix mod file or the same name
4. Start Spider mod

Misc

• Run Tracker : Provides informations about your Runs and your savegames

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Last update: September 18, 2025