

When the timer hits 29:45, a timer starts ticking, and after 30:00, Isaac takes damage every second. Gives a time limit of 30 minutes to beat the game. Having invincibility during the time when damage should be inflicted blocks the damage. Damage increases to 1 heart in Chapter 4 and beyond. Isaac takes twelve hearts of damage from all sources.Įvery 45 seconds, a ticking will begin, and after 5 seconds, Isaac will take 1/2 heart of damage. Isaac takes a full heart of damage from all sources. Provides immunity to Curse of the Unknown. Provides immunity to Curse of the Labyrinth. Isaac leaves a trail of poop behind him as he walks. Completing a room multiple times does not yield additional pickups.īoss rooms lock Isaac in, similar to the Mom fight. At the end of the countdown, the trapdoor to the next floor appears.Įnemies, including bosses, respawn once Isaac leaves the room.

When in a boss room, the boss's health bar is used as a timer and slowly ticks down. All rooms are considered cleared upon entering them doors stay open, room rewards spawn, Stonies instantly die. Isaac starts with 69 coins, but all items and consumables must be bought.Įnemies do not take damage. This includes pedestal items, shop purchases, devil deals, and the Cathedral/Sheol boss chest.

On the PC version pressing the I, O, and U keys during seed entry will replace them with 1, 0, and V respectively. All alphanumeric characters are accepted except for 5, I, O, and U.

Special seeds do not affect level generation.This prevents any achievements from being obtained on that particular run. Except for some special seeds, inputting a seed will cause the 'no trophies' mark to appear.
