Codex books in Remixed Dungeon contain randomly selected content from a pool of possible texts. Each codex reveals a different piece of information when read.

Codex books may contain one of the following types of information:

• Bounce Glyph - Causes enemies to be pushed back after hitting the Hero.
• Affection Glyph - Enchants the enemy for a few rounds, while the Hero is also charmed for some time, but never longer than the enemy.
• Anti-entropy Glyph - Hero ignites and burns, and enemy freezes.
• Multiplication Glyph - This effect causes the Hero to spawn mirror images but takes damage. This can kill the Hero.
• Potential Glyph - Releases a lightning burst that damages the enemy who attacked the player and damages the Hero for roughly half of the damage dealt to the enemy.
• Metabolism Glyph - Hero is partly healed before enemy damage is applied, but hunger will increase rapidly. Works only if not hungry,.
• Stench Glyph - Hero will emit a cloud of toxic gas when hit.
• Viscosity Glyph - Hero will get a delayed debuff, which will cause Hero to take 1 damage per turn, instead of receiving the full amount in one shot.
• Displacement Glyph - Whenever Hero is hit, there is a chance Hero will be teleported to a random nearby tile. This glyph doesn't work on boss levels.
• Entanglement Glyph - Hero can receive herbal armor, but also gets rooted at the same time.

• Grim Weapon - On a successful hit, can instantly kill the target (or deal up to 2x damage on a boss).
• Flaming Weapon - On a successful hit, deals extra damage to target and can burn it.
• Eldritch Weapon - On a successful hit, enemy may flee in Terror.
• Unstable Weapon - On a successful hit, can apply any random enchantment effect.
• Vampiric Weapon - On a successful hit, may heal the Hero for some of the damage dealt to the enemy.
• Lucky Weapon - almost completely ignores enemy armor, and deals much more damage.
• Stunning Weapon - On a successful hit, can paralyze the target.
• Piercing Weapon - On a successful hit, can damage all enemies in a straight line behind the target.
• Poisoned Weapon - On a successful hit, can poison the target.
• Frost Weapon - On a successful hit, can slow the target and prevent it from burning.

• Books written in different languages: Demon, Dwarf, or Elf languages
• Background stories about heroes and their adventures in the dungeon
• General lore about the Pixel Dungeon world

• Cannot be read while blinded
• Content is randomly selected from a predefined pool of possible texts

• Codex.java
• Codex_Story entries in strings_all.xml