Chapters are sets of floors which contain similar enemies, themes, bosses, and difficulties. Earlier chapters are divided into two floors, while later chapters contain one floor. Each chapter has different environments which, while retaining the same feel, have slightly different themes, enemies, bosses, and difficulties. Each environment also has its own music.

Chapter 1Edit

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Basement Cellar

Chapter 2Edit

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The Caves The Catacombs

Chapter 3Edit

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The Depths Necropolis

Chapter 4Edit

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The Womb Utero

Chapter 5Edit

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Sheol Cathedral

Chapter 6Edit

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Dark Room Chest

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