The Binding of Isaac Developer Admits He Made the Game as Practice Before Creating a True Masterpiece

What started as a practice project ultimately became a major hit.

The creator of the acclaimed roguelike The Binding of Isaac, Edmund McMillen, recently reflected on the game’s beginnings. It turns out one of the genre’s landmark titles was originally conceived as a modest training exercise.

In an interview with NoClip he explained that The Binding of Isaac was made to gain experience for work on Mewgenics:

“Tommy [Refenes] and I had been talking about making a roguelike… especially after playing Spelunky.” The developer felt the genre was “underexplored,” and while Refenes was taking a break after finishing Super Meat Boy, McMillen “wanted to build a simple roguelike prototype to test our skills before tackling the larger game Tommy and I planned.”

Three months later work on The Binding of Isaac was complete, and Mewgenics was cancelled:

“I think that project was too risky for Tommy, and he didn’t want to work on it. I remember hearing from someone else that the game had been cancelled, even though I believed the project was only on pause.”

A few years ago Edmund McMillen managed to regain the rights to Mewgenics and development resumed — the release is scheduled for February 10, 2026.

Source: iXBT.games