Memory Waves

From World 8 on, chapter positions 25 and 75 spawn a MEMORY WAVE: for that single wave the frozen world remembers its origin and enemies spawn from the original world's roster instead — World 8, the frozen echo of World 1, pulls its memories from World 1's forest.

How it works

• Exactly two per chapter, at chapter positions 25 and 75
• Enemies come from the source world's roster but are scaled to your current wave and world — nostalgia, not a free ride
• Chapter Conditions do not apply on a Memory Wave — it replaces the composition entirely
• Rewards and drops work as normal for the enemies that spawn

World 7: the Celestial Refrain

World 7 has no source world to remember — its positions 25 and 75 are the CELESTIAL REFRAIN instead: a composition beat heavy on Choir Voice trios. Like Memory Waves, the Refrain replaces that wave's enemy mix and ignores the Chapter Condition.