Some things you may not know!

- If it is the first run of your game session (Starting up the game and doing your first run), it is impossible to get a Deal with the Angel.

- Arcades can ONLY spawn on even floors and XL floors, IF you have at least five cents on you.

- XL floors ALWAYS count as the second of each section of floors, so if your first floor is an XL floor (Basement XL) you WILL be able to get a Deal with the Devil/Angel. Or if you accuire 5 cents and have a forget me now, you could also get an arcade.

- If on an XL floor and one of the two bosses is a horsemen, it IS possible to re-role the other boss item into a cube of meat.

- Taking red heart damage on the boss effects the percentage of getting a deal with the devil/angel.
Note: This is arguable, but I have seen a line of code with my own eyes to ensure it, but taking red heart damage on the floor at all will effect the chance as well.

- Trinkets are only in each run one time. Even if you haven't picked it up, just seeing it makes it impossible to see again.
Note: This does not affect scripted trinkets. (IE the Polaroid dropping from Mom)

- If you pick up the item Roseary, it will make the Bible appear in the shop.

- Using the Book of Revalations on a floor if you haven't beaten the boss, it will ALMOST, not 100%, ensure you fight one of the horsemen. Famine, Pestilence, War, Death, Headless Horsemen, Conquest. Each are determaned by the floor you use the book.

- Using the Best Friend active item isnt alway safe! If it gets hit with a blood lazer or if it gets stomped on while deployed, it will kill you instantly.

- If you have an item such as Brimstone, Moms Knife, Polyphemus, or anything that makes one consistant damage output, taking the Inner Eye or Mutant Spider will decrease your base damage.

- When used, the Book of Belial will increase your percentage with getting a deal with the devil.