
You suddenly fall into a world overrun by demons and spirits. Powerful spirits seize all blessed sacred lands, while feeble lingering ghosts can only struggle to survive. A newcomer like you would normally not last three days...
"Hmm? You aren't supposed to be here..."
Fortunately, Meng Jiang, the Shop Mistress, saves you. She teaches you to harness the power of ordinary playing cards for battle—on one non-negotiable condition: you must defeat and hunt powerful demons to repay your debt. Whether out of gratitude or obligation, you resolve to set off on your journey...

💫Turn-based Card Duel, Offline Single-player Combat💫: Attack/Block/Heal/Spell mechanics, delivering a solo card-battling experience reminiscent of Bang!, FaB. The game uses only playing cards, with an exclusive Red or Black rule.
💫300+ Skills & Art Illustrations💫: Every demon spirit possesses a appearance with an unique skill. Defeat them in battle to obtain their souls, merge with them, and inherit their appearances and abilities. (You have lost your physical form upon arriving in this world and exist only as a soul. You must undergo Soul Fusion with the spirits of other demons to regain a tangible shape.)
💫Free Skill Combination💫: Players may mix and match skills freely. Beyond the initial skill tree selection, unlock diverse skill builds via shop purchases, battle victories, exploration, and spirit sealing. ("Fortune turns like the tides"—who ends up as the real boss remains to be seen.)
💫Seal & Contract System💫: Similar to Pokémon, all demon spirits can be sealed. Instead of fighting to the end, you may use Sealing Talismans to attempt instant sealing and soul contracts. A successful chance capture grants you the spirit's soul directly. (Open your collection codex, challenge and gather every demon spirit!)
💫Random Adventure Progression💫: Levels and bosses are randomly assembled across multiple chapters, bringing fresh challenges to every playthrough. You may encounter unexpected skill combinations in any stage. (Even an ordinary minor foe could wield an embarrassingly overpowered skill set.)
Boasting over 300 unique skills, each tied to an individual demon spirit. These beings are mystical beasts infused with cosmic essence, phantom sprites, fragments of legendary tales, or lingering regrets of the departed... Each bears a one-of-a-kind design.
You can either vanquish them outright or claim them via sealing, forging an eternal soul bond. Naturally, full-strength spirits cannot be sealed easily without weakening them first.
"But spirit is not made for defeat. A spirit can be destroyed but not defeated." Those bound to you by pact may grant you blessings someday, for your souls once intertwined. Moreover, the Shop Mistress is eagerly waiting for you to complete the Tome of Spirits, a record documenting every demon spirit in the realm.

The game adopts an original playing card gameplay system named Red or Black.
🔹 ♤Game Basics♡
- Equipment: 2 full standard poker decks
- Players: 2 / 4 players
- Core Mode: Attack & Defense Duel
- Win Condition: Reduce the opponent’s HP to 0 or lower
- Starting HP: 7 HP per player
If damaged, place 1 card face-down as damage marker
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🔹 ♢Card Types♧
- Number 2–10 → Strike / Block Cards
- Ace, All Jokers → Healing Cards
- J / Q / K → Spell Cards & Counter Cards
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🔹 🃏Setup & Starting Hands🃏
- Shuffle two decks together
- First player: 5 starting cards
- Second player: 7 starting cards
- Turn start: Active player draws 5 cards each round
- Hand limit: Max 7 cards. Discard down to 7 at turn end.
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🔹 🗡️Strike & Block🛡️
Use number cards to attack. Attack cards go to discard after use.
Defender plays a number card to block.
- Block rank ≥ Attack rank → Attack blocked
- 1. Block rank > Attack rank
→ Defender keeps the block card (while must show it face-up)
- 2. Equal rank
→ Both cards discarded
- No block → Defender takes 1 damage,
- 7 markers → Dying State
🔹 ⚔️Enhanced Attack⚔️
- 2 number cards as Enhanced Attack. 2 damage if hit.
- Take the higher number as attack rank
- Can be blocked.
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🔹❤️🩹Healing & Dying Rule❤️🩹
- Ace: Recover 1 HP
- Joker: Recover 2 HP
- Healing cannot be countered
- HP ≤ 0 → Enter Dying State
- Must heal immediately, or lose the round
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🔹🪄Spell Cards ( J / Q / K )🪄
- Jack: Destroy 1 card
- Queen: Draw 2 cards
- King: Steal 1 card from target
- All J/Q/K: Can be used as Counter to cancel any spell.
- Counter chains allowed: counter, re-counter, until one side stops
🔹 🎬Special Spell🎬
- Pair (2 same rank)
Draw 2 cards. Cannot be countered.
- Three-of-a-Kind (3 same rank)
Draw 5 cards. Cannot be countered.
- Straight
Randomly destroy 1 card from each other. 2-player game: destroy 2 cards.
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🔹 🟥Red or Black Color Restriction ⬛
On your turn, you must choose one single color only for all attacks and spells:
- Red: Hearts, Diamonds
- Black: Spades, Clubs
Exempt from color limit:
- All defense block cards
- All counter cards (for all players)