Apple’s move from 32-bit to 64-bit architecture rendered thousands of legacy apps obsolete. Rather than update the app to 64-bit, Nicalis and Edmund McMillen let the iOS port die. It was delisted from the App Store. If you own a modern iPhone or iPad, you cannot download it. If you had it on an old device, you can play it, but it crashes frequently. The first mobile port was officially deceased.

The Binding of Isaac relies on minute precision. Later floors (The Womb, Sheol, The Chest) are bullet hell labyrinths. A single pixel of movement can mean the difference between life and death against Hush or Delirium. Virtual joysticks cover 30% of the screen, and your thumbs obscure enemies.

Weeks passed in a blur of error reports and crash logs. Isaac grew pale. He stopped answering his personal phone. The game was becoming a part of him. He dreamt in variable rates and polygon counts. He started referring to the bugs as "demons."