D20

Lore & Background

In the twisted basement of Isaac's mind, the D20 is more than a game piece—it's a fragment of forgotten divinity, a relic from a time when gods played with mortal lives as if they were toys. Its twenty faces represent the infinite possibilities of existence, each roll a new path through the labyrinth of suffering. Some say it was left behind by a gambler who lost everything, while others whisper it's a piece of a shattered cosmic die that once decided the fate of worlds. To those who find it, the D20 offers a fleeting taste of control over the uncontrollable. It can turn a room of useless trinkets into a treasure trove, or plunge a hopeful soul into deeper despair. Its power is indiscriminate, a mirror of the randomness that governs Isaac's reality. Wielders learn quickly that the die cares not for their desires—only for the roll itself. The D20's presence in the basement is a constant reminder that luck is a currency as valuable as any tear or bomb. It embodies the core struggle of Isaac's journey: the fight against a world where order and chaos are indistinguishable, and where every choice is a gamble.

In Their Own Story

The floor was littered with broken toys and empty pedestals. Isaac clutched the D20, its edges worn smooth by countless hands. He rolled it across the dusty floor, and as it tumbled, the air shimmered. The items around him dissolved into motes of light, reforming into new shapes—a red candle, a jar of flies, a strange doll. He didn't know if this was better or worse, but for a moment, he felt like the master of his own fate. The die came to rest on a single face, and Isaac smiled, ready for whatever came next.

Reader's Guide

The D20 is an active item that, when used, rerolls all items currently on the ground in the room you are in. This includes items from item pedestals, shops, or any other source that has spawned items in that specific room. It does not affect items you are already carrying or those in other rooms. In-world, the D20 is a tool of pure chance, often used by desperate explorers who have hit a dead end with their current loadout. It shines in rooms with multiple items, like those from a Curse of the Labyrinth or after clearing a boss. However, its randomness means it can just as easily ruin a good setup as improve it. Wielders are typically risk-takers or those who have nothing to lose. It pairs well with items that generate extra items, such as the Restock machine or a Sack Head, maximizing the number of rerolls. But beware—using it in a room with a single bad item might leave you with something worse. The D20 rewards boldness and punishes caution, making it a true test of a player's nerve.

Did You Know?

• The D20 is a reference to the iconic twenty-sided die used in tabletop role-playing games, symbolizing the element of chance.
• It was introduced in The Binding of Isaac: Rebirth as part of the game's expanded item pool.
• The D20 can be used multiple times in the same room if you have enough charges, allowing for repeated rerolls.
• Its effect is similar to the D6, but instead of rerolling a single item, it affects all items in the room at once.