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The Binding of Isaac: Repentance+ Online

The Binding of Isaac: Repentance+ Online is the online multiplayer update for the Repentance expansion of the roguelike game The Binding of Isaac.

Last updated October 30, 2026

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Overview

The Binding of Isaac: Repentance+ Online refers to the online multiplayer component released as part of the Repentance+ update to The Binding of Isaac: Rebirth, the roguelike action game created by designer Edmund McMillen and developed with Nicalis. The base game, The Binding of Isaac: Rebirth, launched in 2014 as a remake of the original 2011 Flash title, and the Repentance expansion followed in 2021, adding new bosses, items, characters and reworked content. The Repentance+ update introduced cooperative online play, allowing players to join each other's runs over the internet rather than only through local co-op. The offering is a digital product brand within the indie video-game space rather than a standalone company. It is distributed through PC storefronts such as Steam, where the base game and its expansions are sold, and it depends on ownership of the underlying game and Repentance content. Its audience is the established Binding of Isaac community plus newcomers drawn by online co-op. No verified official website, corporate headquarters, founding date or ownership structure specific to "Repentance+ Online" as a separate entity is available in the supplied evidence, and the supplied snippets concern unrelated radio and local-news content. This entry should therefore be treated as a product-level identifier for the online multiplayer update rather than a distinct company.

History

The Binding of Isaac began as a 2011 Flash game designed by Edmund McMillen and Florian Himsl. It was remade as The Binding of Isaac: Rebirth in 2014, developed by Nicalis with McMillen, and expanded through the Afterbirth, Afterbirth+ and Repentance expansions. Repentance, released in 2021, substantially reworked and expanded the game with new content drawn from the community mod Antibirth alongside official additions. The Repentance+ update subsequently added online multiplayer co-op, letting players host and join runs over the internet. The specific "Repentance+ Online" label describes this online-play capability rather than a separate company or standalone title. The supplied evidence does not contain verifiable details about the update's release date, developer credits or distribution terms, so those specifics are omitted here.

Products and positioning

A digital add-on/update brand for the indie roguelike The Binding of Isaac, aimed at players seeking online cooperative play.

  • The Binding of Isaac: Repentance+ Online co-op update

    Online multiplayer co-op added to the Repentance+ version of The Binding of Isaac: Rebirth.

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