By: Alioth Studio
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Welcome to Eientei, combine multiple colors of mana to build your ideal deck, duel with gensokyo girls, and chase back the mysterious moon treasure. Also, enjoy the unpredictable Roguelike with fantasy Danmaku!
Mac · Aug 18, 2022
Worldwide · Exact date · Early access · IGDB
PC (Microsoft Windows) · Aug 18, 2022
Worldwide · Exact date · Early access · IGDB
Nintendo Switch · Aug 27, 2026
Worldwide · Exact date · IGDB
Catalog sources
86 achievements available.

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Defeat Aya Shameimaru before she has her turn.
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Resolve the incident with at least 5 black mana in the mana base.
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Resolve the incident with at least 5 blue mana in the mana base.
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Have 1000 points of Barrier.
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Play 30 cards in a single turn.
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Defeat Cirno.
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Apply Cold to an enemy 9 times in a row.
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Find any of the following Exhibits from the Land of the Back Door: Cookie, Peach, Apple, or Grape.
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Defeat Doremy after she wakes up naturally.
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Exit Fugue after playing 12 or more cards while in it.
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Have 50 Firepower.
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Defeat a boss on the first round of combat.
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Resolve the incident with 5 different colors of monochromatic mana in the mana base.
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Perform 10 Follow-Ups in one turn.
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Have 9 summoned Teammate cards in the hand.
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Have 99 Frost Armor.
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Resolve the incident with at least 5 green mana in the mana base.
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Resolve the incident with a Jade Box modifier.
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Have 20 different buffs active at once.
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Activate 10 Throwing Knives in a single turn.
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Gain 30 mana in a single turn.
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Have no more than 3 cards in the hand, draw pile and discard pile combined after winning combat.
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Resolve the incident with no more than 8 cards in the library.
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Resolve the incident perfectly on Lunatic Mode with Cirno.
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Resolve the incident perfectly on Lunatic Mode with Marisa Kirisame.
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Resolve the incident perfectly on Lunatic Mode with Reimu Hakurei.
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Resolve the incident perfectly on Lunatic Mode with Sakuya Izayoi.
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Defeat Marisa Kirisame.
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Gain 500 Money using Money Shower during a single run.
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Change Mental States 7 times in one turn.
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Play for 5 turns consecutively.
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Pay the bill a total of 5 times in the Late Night Barbecue event.
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Offer Artificial Jewelry to Narumi.
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Have only Treasures or Shining Exhibits in a run.
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Resolve the incident with Cirno.
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Resolve the incident with Marisa Kirisame.
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Resolve the incident with Reimu Hakurei.
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Resolve the incident with Sakuya Izayoi.
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Win combat with 1 life remaining.
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Defeat a boss without taking any damage.
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Play 8 Unstable Potions in a row.
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Resolve the incident with all 7 requests accepted.
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Resolve the incident with a request accepted.
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Resolve the incident perfectly on Lunatic mode with all 7 requests accepted.
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Resolve the incident perfectly with all 7 requests accepted.
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Resolve the incident with at least 5 red mana in the mana base.
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Defeat Reimu Hakurei.
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Sell any of the following Exhibits to Rinnosuke: Ball With Wings, Purple Mirror, or Peach.
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Get defeated by Rumia's car in the Night Speeding event.
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Defeat Sakuya Izayoi.
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Defeat Sakuya in an Extra Turn.
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Resolve the incident perfectly within 60 minutes.
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Deal 300 or more damage with a single card.
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Have 200 or more Time Pulse.
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Resolve the incident perfectly with Cirno.
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Resolve the incident perfectly with Marisa Kirisame.
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Resolve the incident perfectly with Reimu Hakurei.
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Resolve the incident perfectly with Sakuya Izayoi.
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Resolve the incident without spending any money at a shop.
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Resolve the incident with at least 5 white mana in the mana base.
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Defeat an enemy by inflicting 100 or more damage with Yin-Yang Orbs.
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Defeat Youmu without getting hit by her Roukanken.
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Community notes