[BETA] REPENTOGON: Isaac Script Extender

Uploaded · Published January 1, 2024 · Updated December 8, 2025

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Authors: JSG, Ghostbroster Connor, hgrfff, Wofsauge, jerb, Xalum, fly_6, kittenchilly, Sylmir, im_tem, frto027, Magpie Smoking a Cig, Kotenok_Murka, catinsurance, Guantol

Last revision: 29 Nov, 2025 at 20:54 UTC (11)

File size: 1.02 MB

On Steam Workshop

Description:

[repentogon.com]

A new era for Isaac modding begins now.

REPENTOGON is NOT a traditional mod, and does not install like one. Head to our install guide[repentogon.com] for more info.

REPENTOGON is a mod for The Binding of Isaac: Repentance+ version v1.9.7.12.J273 (installation can also be performed using the current latest version of Repentance+ from Steam) that extends the Lua API with much-needed bug fixes, extra functionality, and performance enhancements. This is analogous to a "script extender" for other games like Skyrim.

REPENTOGON is the result of thousands of hours of combined work by over a dozen modders responsible for some of the most popular mods for Isaac. Frustrated with the shortcomings of the API, we’ve decided to take matters into our own hands.

Thanks to our changes to the API, you can expect mods to run faster out of the box, and our extra features empower mod developers to push the performance envelope for mods further than ever before. Furthermore, highly requested features that were previously impossible for a traditional mod, such as completion marks for modded characters on the main menu and Devil and Planetarium room chance manipulation, are all here. We even added 30+ rideable dragons!

Too many to count! But here’s the highlights:
* Mods will run faster right out of the gate
* Overhauled Debug Console, making full use of Dear ImGui
* Reworked stats page, tracking more than 40 in-game stats
* Revamped Bestiary, allowing for quick switching between pages and a seperate tab for bosses
* The Mod Menu automatically restarts the game when enabling/disabling mods
* Completely optional quality-of-life tweaks (including that one Hush bug)
* Seamless achievement support
* Lockable custom characters and full completion mark support (yes, even on the main menu)
* NullItem functionality
* The ability to add custom Giantbook animations
* Support for adding completely new boss rush waves
* Custom cutscenes functionality
* PRE_ADD_COLLECTIBLE
* EntitySlot
* 30+ rideable dragons!
* And so much more!