全家福#327

The Polaroid is an unlockable passive item.

• In the original The Binding of Isaac flash game, The Polaroid that Mom would drop in addition to a regular collectible from the boss pool. When it was originally implemented, it was only available in the normal Trinket drop pool and was implemented secretively. Players were frustrated, so, with an update, Edmund made it so it would also only drop if the player took no red heart damage against Mom, similar to the conditions for the Devil Room to open its path. Since players would not always receive the Polaroid and might switch it out with another trinket, Edmund wanted to make the discovery of Chest (and its at-the-time new ending) something special.
• As soon as The Polaroid or The Negative become available, they will drop in place of the regular Boss Room item Mom would otherwise provide, essentially providing a difficulty increase for Womb and beyond after either has been unlocked.
• They can, however, be re-rolled (or converted into stat increases with Void) at the cost of closing off access to Chapter 6. Isaac (Boss) Unlocks The Binding of Isaac: Rebirth
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