Possess Your Senior Sisters and Duel!

Yu-Gi-Oh! with possession. Yu-Gi-Oh! in a cultivation world.

Fantasy Cultivation × Deckbuilding × Romance × Sect Management × Roguelike × Social Deduction

You thought you were inheriting a sect.

Then you realized—

The debts left by your master are yours to repay.

The ruined Spirit Fields are yours to restore.

The crumbling mountain gate is yours to rebuild.

Your Senior Sisters all have troubles of their own.

Eight major sects are watching your every move.

And one day, six cultivators may sit down inside the sect hall and force you to answer one simple question:

Who is lying?

And when words are no longer enough—

play a card.

A Sect Master With Almost Nothing

After your master disappears, Gu Chang’an inherits the declining Biyun Mountain Sect.

The sect is weak.

The Spirit Fields are abandoned.

Enemies surround the mountain.

Your five Senior Sisters each carry secrets of their own.

And among the relics left behind by your master lies a mystery that has been sealed away for sixty years.

The righteous sects covet Biyun Mountain’s Spirit Bamboo Forest.

The demonic path waits for an opportunity to strike.

The beast clans are gathering their armies.

Dark sects move in the shadows.

And you?

You are the newly appointed Sect Master of Biyun Mountain.

A nobody in the eyes of the cultivation world.

But hidden within you is an extraordinary gift—

a Heavenly Spirit Root.

Your greatest weapon is not a legendary sword.

It is a deck of Spirit Cards that can grow, evolve, fuse, ascend, and respond to the bonds you form throughout your journey.

Your sect will change.

Your companions will change.

And your deck will change with them.

🎴 1,300+ Spirit Cards — Build a Deck That Is Truly Yours

Collect more than 1,300 Spirit Cards across units, spells, characters, possession cards, fusion cards, evolved forms, bond cards, and more.

There is no single “correct” deck.

Specialize in one sect and push its mechanics to the limit.

Or combine cards from multiple sects to create strange interactions and unexpected strategies.

Shields.

Counterattacks.

Armor Piercing.

Execution.

Immortality.

Ghosts.

Exorcism.

Banishment.

Lifesteal.

Sacrifice.

Possession.

Fusion.

Edicts.

Sword Laws.

Pill Essence.

And many more common, rare, and sect-exclusive mechanics.

Some cards help you survive.

Some cards make sure your opponent does not.

And some can even—

change the very conditions for victory.

What matters is not simply what you draw.

It is what you do with it.

⚔️ Eight Sects, Eight Different Combat Philosophies

The eight major sects are not simple color variations.

Each has its own playstyle, mechanics, and deckbuilding philosophy.

Biyun Mountain

Growth, evolution, and cooperation.

Seemingly weak disciples can slowly transform into terrifying late-game threats.

Tianheng Sect

Sword Laws, craftsmanship, formations, and the Five Halls.

Build disciplined board states and overwhelm the enemy through coordination and structure.

Haoran Academy

Edicts, restrictions, manipulation, and battlefield rules.

Other sects play cards.

Haoran Academy prefers to decide how cards are allowed to be played.

Qingluan Pavilion

Healing, purification, Pill Essence, and stat conversion.

A patient sect that turns long battles into its greatest advantage.

Youming Valley

Graveyards, ghosts, puppets, and resurrection.

The unit you killed last turn may be standing again before the next one ends.

Xueluo Sect

Blood, sacrifice, self-damage, and explosive power.

Walk the edge between survival and destruction.

Jiuyou Palace

Control, theft, manipulation, and betrayal.

The most dangerous card on the battlefield may be—

your own.

Savage Demon Kingdom

Big bodies.

Big attacks.

Big problems.

Sometimes the simplest strategy is also the most effective:

hit harder.

Play each sect on its own, or mix them together.

Your deck is your path of cultivation.

🧠 Build, Save, and Share Your Decks

The game features a full deck-building system with filters for sect, cost, keywords, and effects.

Create and save multiple builds for different strategies.

Found something ridiculous?

Generate a deck-sharing code.

Send it to other players, let them import your deck, check which cards they are missing, and continue modifying it themselves.

One player might discover an endless Ghost loop.

The next might build a deck designed specifically to destroy it.

Your deck does not have to stay inside your own save file.

It can become part of the community.

✨ Alternate Art, Card Backs, Battlefields, and Music

Cards are not just numbers.

They are collectibles.

Unlock alternate artwork for your favorite characters.

Change your card backs.

Customize your battle background.

Choose the music you want to hear during Spirit Card battles.

Your deck can look different.

Your battlefield can feel different.

Your collection can become uniquely yours.

👻 True Spirit Possession — Become Part of the Card

One of the core systems of the game is Spirit Possession.

When a compatible character is targeted by the right possession technique, the card does not simply receive a temporary buff.

It can become something entirely new.

A new illustration.

New stats.

New abilities.

A completely different combat role.

The same character may produce different results depending on the possession technique used.

That means deciding who to possess, when to possess them, and which possession route fits your deck becomes an important strategic choice.

Sometimes you begin by raising an ordinary character card.

And somewhere along the way—

you realize you have created a monster.

💞 Your Senior Sisters Are More Than Card Art

Across the eight major factions are dozens of important female characters with their own personalities, loyalties, histories, relationships, and storylines.

Some have known you since childhood.

Some meet you as enemies.

Some act as though they cannot stand you—

yet are always the first to step forward when danger comes.

Others do not believe you deserve to be called Sect Master at all.

Through discussions, Spirit Card duels, daily events, and personal storylines, you gradually learn who they really are.

And those relationships do not stay inside dialogue scenes.

Your bonds with them directly affect battle.

❤️ Affection Is More Than a Number

Core characters have their own affection and bond progression.

As your relationship deepens, their character cards can unlock new reactions and combat effects.

These may include:

unique entrance dialogue

healing

shields

damage prevention

survival from lethal damage

attack growth

immunity to control effects

advanced forms and transformations

What happens between you in the story can eventually become power on the battlefield.

She is not protecting you because a number became large enough.

She is protecting you because of everything you have been through together.

🏯 You Are Still a Sect Master

Winning card battles is only one part of running Biyun Mountain.

Your sect begins in decline, and you must gradually rebuild it.

Complete sect affairs.

Accumulate development resources.

Unlock and improve facilities.

Assign characters to sect duties.

Visit other sects.

Take on elite challenges.

Complete dangerous missions.

Recover rare Spirit Cards.

Handle resource commissions.

As Biyun Mountain grows stronger, the sect itself begins to support your other activities.

The work you do today may become the advantage that helps you climb one more floor tomorrow.

🌿 Tired of Fighting? Go Farming

Not every day of cultivation needs to end in bloodshed.

Return home and cultivate your own Spirit Fields.

Buy seeds.

Plant them.

Raise spiritual crops.

Wait for them to mature.

Harvest valuable resources.

As your sect develops, you can unlock more advanced cultivation areas and convenient farming features.

What begins as a small patch of land beside the mountain may eventually become one of Biyun Mountain’s most important sources of wealth.

Sometimes cultivation means defeating a powerful enemy.

Sometimes it means checking whether your herbs are ready to harvest.

🗼 Dao Tower — Push Your Deck to Its Limit

Want to know whether your deck is actually strong?

Enter the Dao Tower.

Climb through increasingly difficult floors as enemies and battle conditions continue to evolve.

Some stages test damage.

Some test survival.

Others are designed specifically to punish certain deck archetypes.

Higher floors require more than oversized stats.

They require real understanding of your deck.

The Dao Tower is not where you prove that your cards are expensive.

It is where you prove—

you know how to use them.

🧭 Senior Sister Trials — Build Your Deck While Trying to Survive

The Senior Sister Trials offer a more unpredictable challenge.

Battles.

Elite encounters.

Bosses.

Blessings.

Relics.

Curses.

Sect upgrades.

Your route and your choices continuously reshape your deck.

One run may turn into a Ghost resurrection engine.

The next may give you a curse that forces you to rethink your entire strategy.

You are not entering with a finished deck.

You are building it—

while trying to survive.

🕯️ Sect Night Council — Social Deduction in a Cultivation Sect

Some problems cannot be solved through battle.

At least not immediately.

In the Sect Night Council, multiple characters gather inside the sect hall and enter a hidden-role battle of information and deception.

Speak.

Analyze.

Suspect.

Defend.

Vote.

Everyone has an identity.

Everyone has an objective.

You must study their words and actions to determine who can be trusted.

Does that sound a little like a cultivation-themed social deduction game?

It is.

But this is still a cultivation world.

So if the argument goes far enough—

you may actually end up playing cards to settle it.

Sometimes you prove your innocence with logic.

Sometimes you prove it on the battlefield.

⭐ Card Fusion and Ascension — Create Your Own Version of a Card

Duplicate cards are never completely useless.

Through fusion and ascension, your favorite cards can continue to grow.

Improve their base stats.

Unlock new development potential.

Gain powerful special affixes.

Two copies of the same card may eventually become completely different tools depending on how you build them.

Got an affix you like?

Keep it.

Not satisfied?

Reforge it.

The end result is no longer simply “that card.”

It becomes—

your version of that card.

💎 One Clear Economy Built Around Spirit Stones

The game does not bury you under a dozen confusing currencies.

Most progression revolves around Spirit Stones.

Earn them through combat, cultivation, Spirit Fields, sect development, story events, and other activities.

Then reinvest them into cards, upgrades, and your sect.

Want to battle?

Battle.

Want to climb the tower?

Climb.

Want to spend an evening refining a deck?

Do that.

Tired?

Go back to the Spirit Fields.

Or simply visit one of your Senior Sisters and see what she is doing.

There is no stamina system forcing you to stop playing.

Whenever you want to return to Biyun Mountain—

it will still be there.

🛠️ Steam Workshop Support

If the existing cards and systems are still not enough—

the Steam Workshop opens the door to even more possibilities.

New cards.

New builds.

New characters.

New systems.

Even new stories.

Create your own sect mechanics.

Design new characters.

Build unusual Spirit Card archetypes.

Expand the world in directions the original story never imagined.

The future of Biyun Mountain does not have to be written only by the developers.

It can also be written by the players.

So What Kind of Game Is This?

It is a card game.

But it can also be a long-form cultivation story.

You can build decks.

Climb towers.

Run Roguelike trials.

Manage a sect.

Cultivate Spirit Fields.

Collect alternate artwork.

Raise your favorite cards.

Build relationships with your Senior Sisters.

And sometimes—

gather six cultivators inside the sect hall and begin a social deduction game.

All of these systems eventually lead back to one place:

your Biyun Mountain.

You Are Protecting More Than a Mountain

Your master did not leave you the sharpest sword.

Nor the most prestigious title.

He left you a name.

Chang’an.

May you live a life of peace.

And perhaps, one day—

may you become strong enough to protect the peace of everyone beside you.

But the storm beyond the mountain is already approaching.

Righteous sects.

Demonic cultivators.

Beast clans.

Dark factions.

All of them are moving toward Biyun Mountain.

What you can rely on is the deck in your hand.

The people willing to stand beside you.

And the version of yourself you rebuild after every defeat.

The bamboo forest sways in the wind.

The mountain gates are opening.

Sect Master.

It is time to play your hand.