Save Data & Deck Guide (CZN's Roguelike Card System)
How CZN layers a roguelike deck ("Save Data") on top of your squad: cards, Neutral Cards, Epiphany upgrades, and Prism Modules.
Updated: 16/07/2026 (auto-refreshes every 6 hours)
On top of your squad, Chaos Zero Nightmare layers a roguelike deck system. This is the Save Data loop — the part that makes runs feel different every time, and the part players call the deepest system in the game.
Save Data and your deck
| Term | Meaning |
|---|---|
| Save Data | The deck you carry into a roguelike run |
| Cards | Slotted to shape what your run can do |
| Runs | Played through Chaos Manifestation / Zero System modes |
Card types
| Card | What it is |
|---|---|
| Combatant cards | Tied to a specific unit — browse them on the Cards list |
| Neutral Cards | Shared cards any run can pick up |
| Epiphany | Mid-run upgrades that reshape your deck as you go |
Prism Module
| Point | Detail |
|---|---|
| What it is | A card-animation / module layer obtained on its own banner |
| Role | Adds flavour and effects to your card play |
| Rate | Its exact 5★ rate is being confirmed (updating) |
Deck-building tips
| Tip | Why |
|---|---|
| Build around one plan | A focused deck outperforms a pile of unrelated cards |
| Match cards to your units | Combatant cards pay off most on their owning combatant |
| Take Epiphany upgrades that compound | Small effects that stack win long runs |
FAQ
| Question | Answer |
|---|---|
| Does my deck carry between runs? | Your Save Data setup persists, while the in-run choices (Epiphany, pickups) reset each run. |
| Where do I see every card? | The Cards list catalogues them and links each to its combatant. |
| Is deck-building required? | It is the core progression for the roguelike modes, so it rewards learning even a little. |