The Binding of Isaac: Rebirth is the ultimate roguelike for item synergy enthusiasts — over 700 items that combine in thousands of emergent ways, many of which the developers never explicitly designed. One run you're firing homing lasers, the next you're spawning an army of familiars, and the next you're a ball of knife-shooting orbital meat. The game's depth is staggering: 34 playable characters (including Tainted variants), 12 endings, secret floors, challenge runs, and an item pool so vast it takes hundreds of hours to see everything. The Repentance expansion is considered the definitive version, adding two new characters, hundreds of items, and the hardest content in the game.
Your choice of equipment defines your damage output and playstyle. This guide ranks every major option, explains what makes each one strong, and tells you which builds they pair best with.
Equipment Rankings
| Equipment | Tier | Best For | Notes |
|---|---|---|---|
| Brimstone | S | Judas | A charged beam that pierces all enemies and deals massive damage. |
| Mom's Knife | A | Isaac | Replaces tears with a thrown knife that deals 2x your damage on contact and 6x on point-blank throw. |
| Sacred Heart | A | All characters | An Angel Room item that grants +1 damage, homing tears, and a 2. |
| Godhead | B | The Lost | An Angel Room item exclusive to The Lost's completion marks. |
| Tech X | B | Isaac | Replaces tears with a chargeable ring of energy that scales in size with charge time. |
S-Tier: Brimstone
A charged beam that pierces all enemies and deals massive damage. Available in Devil Rooms for 2 red hearts. Brimstone is consistently rated the best item in the game. It synergizes with almost everything — homing makes it seek targets, Spoon Bender creates a heat-seeking death laser.
| Attribute | Detail |
|---|---|
| Tier | S |
| Best For | Judas |
| Key Mechanic | item synergies |
| Recommended Build | Isaac |
How to get it: Available from mid-game onward. See our walkthrough for the exact progression point.
Best builds using Brimstone: Pairs naturally with Isaac thanks to stat scaling synergies.
A-Tier: Mom's Knife
Replaces tears with a thrown knife that deals 2x your damage on contact and 6x on point-blank throw. Extremely powerful but changes your attack pattern entirely. Synergizes with damage ups and speed. Found in item rooms, boss rooms, or Devil Deals.
| Attribute | Detail |
|---|---|
| Tier | A |
| Best For | Isaac |
| Key Mechanic | character unlocks |
| Recommended Build | Azazel |
How to get it: Accessible in the early-to-mid game. Check our maps guide for the location.
Best builds using Mom's Knife: Pairs naturally with Azazel thanks to stat scaling synergies.
A-Tier: Sacred Heart
An Angel Room item that grants +1 damage, homing tears, and a 2.3x damage multiplier. Widely considered the strongest single item in the game due to the massive damage multiplication and homing effect. Finding Sacred Heart usually guarantees a winning run.
| Attribute | Detail |
|---|---|
| Tier | A |
| Best For | All characters |
| Key Mechanic | room clearing |
| Recommended Build | Judas |
How to get it: Accessible in the early-to-mid game. Check our maps guide for the location.
Best builds using Sacred Heart: Pairs naturally with Judas thanks to stat scaling synergies.
B-Tier: Godhead
An Angel Room item exclusive to The Lost's completion marks. Grants homing tears surrounded by a damaging aura — the aura hits enemies continuously as the tear passes near them. With slow tears, the aura has more time to deal damage, making shot speed downs beneficial.
| Attribute | Detail |
|---|---|
| Tier | B |
| Best For | The Lost |
| Key Mechanic | devil and angel deals |
| Recommended Build | The Lost |
How to get it: Found in later areas. Our walkthrough covers when you can access this.
Best builds using Godhead: Pairs naturally with The Lost thanks to stat scaling synergies.
B-Tier: Tech X
Replaces tears with a chargeable ring of energy that scales in size with charge time. The ring pierces all enemies and deals damage based on ring size. Synergizes with nearly every tear modifier. Found in treasure rooms. One of the most consistently powerful items alongside Brimstone.
| Attribute | Detail |
|---|---|
| Tier | B |
| Best For | Isaac |
| Key Mechanic | boss rush |
| Recommended Build | Tainted Characters |
How to get it: Found in later areas. Our walkthrough covers when you can access this.
Best builds using Tech X: Pairs naturally with Tainted Characters thanks to stat scaling synergies.
Equipment Progression Path
The order you should acquire equipment as you progress:
- Starting gear → Enough to clear Basement
- Mom's Knife → Your first real upgrade, available early
- Sacred Heart → Mid-game upgrade with good scaling
- Brimstone → Best-in-slot, aim for this by late game
- Upgrade to max → The power spike from max upgrades is enormous
Equipment Tips
- Always upgrade your primary equipment before diversifying — one strong option beats three mediocre ones.
- Match your equipment to your build's stat priorities for maximum scaling.
- Tinted rocks (slightly discolored rocks with an X mark) always contain soul hearts, black hearts, or bone hearts when bombed. Learn to spot them — they're one of the most reliable health sources in the game.
- Check our tier list for how equipment rankings affect overall build effectiveness.
More The Binding of Isaac: Rebirth Guides
- The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth Overview
- The Binding of Isaac: Rebirth Best Builds
- The Binding of Isaac: Rebirth Tier List
- The Binding of Isaac: Rebirth Walkthrough
- The Binding of Isaac: Rebirth Beginner's Guide
- The Binding of Isaac: Rebirth Tips & Tricks
- The Binding of Isaac: Rebirth Combat Guide
- The Binding of Isaac: Rebirth Boss Guide
- The Binding of Isaac: Rebirth Maps & Locations
- The Binding of Isaac: Rebirth Crafting Guide
- The Binding of Isaac: Rebirth Classes & Characters
Similar Games
If you enjoy The Binding of Isaac: Rebirth, check out these related guides:
- Risk of Rain 2 Weapons Guide — roguelike game with similar mechanics
- Hades Weapons Guide — roguelike game with similar mechanics
- Darkest Dungeon Weapons Guide — roguelike game with similar mechanics
