Items
Bosses
Transformations
Floors
Rooms
100

An Item that can ONLY be spun down into to gain/obtain in a run; Boss Fight Unlock.

What is Dogma?

100

Can be spared if Given 12 Coins.

Who is Bumbino?

100

Grants Flight and Periodic Flys; Isaacs Dead Cat.

What is Guppy?

100

The First Floor you Ever encounter no matter what when starting a new save.

What is The Basement?

100

This Room has a Golden Door with a Crown On Top.

What is Treasure Room?

200

Turns your Tears Into Rocks, chance to break other rocks and secret room walls.

What is Terra?

200

The Alternative Version of Gemini.

Who is Steven?

200

Increased Damage and Crazed Look via Needles.

What is Spun?

200

Has 2 Variants depending on your choice of the Polaroid or Negative.

What is The Chest/Dark Room?

200

This room has a light grey door with a open book on top.

What is The Library>

300

Spawns a Soul Heart every 7-9 rooms.

What is The Relic?

300

The True Final Boss, composed of all the memories Isaac has of previous bosses.

Who is Delirium?

300

Extra Heart by Picking up Mushrooms.

What is Fun Guy?

300

The Place where you fight possibly the most difficult/tanky boss in the game.

What is ???

300

This Room is Typically Bombed into, and is found near the boss room.

What are Super Secret Rooms?

400

An Item Considered more dangerous than Dr. Fetus; makes shots go green boom.

What is Ipecac?

400

The Only Boss in the game that has a special death animation when killed via Chaos Card.

Who is Great Gideon?

400

The Rarest Transformation in the Game.

What is Bob?
400

Where The Dogma Fight Takes Place, and where you go when DC is used.

What is "Home"?

400

A Dark Grey Door with blood on it, and a blood pool in front of it.

What is The Sacrifice Room?

500

An Exclusive Character Only/Pocket Item; only obtainable by Picking up Birthright.

What is Recall?

500

The Communitys Most Hated Boss; is every single boss in the "April Fools!" Challenge.

Who is The Bloat?

500

Removes your eyes, and grants flight + Soul Hearts.

What is Seraphim?

500

The Only Floor to naturally spawn Flaming Enemies.

What is Burning Basement?

500

Only Accessible via Telepills, Crawlspace Bugs, or going to far off the map.

What are "I AM ERROR" Rooms?