Touhou Defense Tale ~ AI Test in Touhou ~

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Latest news

• Patch Notes·28 Jul 2026Official

  Minor Update & A Final Message

  Hello, this is Shikishin Studio.This update is a small patch focused on bug fixes and balance adjustments.ChangesBalanceEX Marisa has been buffed.Attack Speed: 2.5 → 3Increased activation chance for all skillsIncreased damage for all skillsMaster Spark damage increased by 50%Bug FixesFixed an issue where Arcana Rinnosuke's Attack Speed buff was not increasing correctly.Fixed an issue where the game's first screen was always displayed in Korean regardless of the Steam language setting.One Last Thing...With this patch, development updates for Touhou Defense Tale will officially come to an end.First of all, I would like to sincerely thank everyone who played and supported the game.As the subtitle suggests, "AI Test in Touhou" began as an experiment to answer one simple question:"Can AI be used to create a complete game?"This was my very first game project. I had almost no game development experience, no formal game design document, and simply built the game by implementing ideas as they came to me.Because of that, the game certainly has its rough edges, and its scope is relatively small. It was always intended to be a short game that players could enjoy over a few hours or perhaps a week or two.However, this project proved something very important to me.With the help of AI, even someone with little development experience can create a game that many people genuinely enjoy.And all of you proved that possibility was real.Far more people played this game than I ever expected, and your feedback and encouragement kept me motivated until the very end. This project has become an invaluable experience that I will never forget.Now I'd like to take everything I learned here and create a much more polished game from the ground up.I truly love the Touhou Project, and I plan to continue creating Touhou fan games across various genres. Just like this game, all of my future projects will be completely free, whether they are released on mobile or Steam.If you enjoyed this game, I hope ...
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• Patch Notes·18 Jul 2026Official

  Extra First Clear & Bug Fix

  Hello, this is Shikigami Workshop.Today, at around 13:30, the first-ever clear of Extra difficulty has been achieved!The first player to clear Extra difficulty is:ID: Hong100with a clear time of 45:05.Congratulations on being the very first player to conquer the highest difficulty!Bug FixFixed an issue where PH Sanae was not correctly counted for EX Suwako's "God" synergy.PH Sanae is now properly included as a valid God synergy character.Thank YouThanks to everyone's incredible support, the game has now surpassed 100 concurrent players!We sincerely appreciate everyone who has played the game, left reviews, and introduced it through streams and videos.We also apologize for the frequent small updates over the past few days due to bug fixes and anti-cheat measures.To keep the leaderboards fair, we are continuously monitoring and removing invalid records.We will continue improving the game's balance, fixing bugs, and adding quality-of-life improvements based on your feedback.Thank you for your continued support!
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• Patch Notes·17 Jul 2026Official

  [Update] EXTRA Difficulty and 8 New Characters

  Hello, this is Shikigami Workshop.First of all, we sincerely apologize for the delay and for keeping everyone waiting longer than expected.This update introduces EXTRA, a new difficulty level above Lunatic. More time than originally anticipated was required to repeatedly test and adjust its late-game difficulty, special rules, character combinations, and overall balance.Some of the visual and animation assets for the newly added characters were created with the assistance of AI. However, we encountered difficulties producing them in the exact form and quality we wanted. As a result, some of the new character assets may feel less polished than those of the existing characters, and we sincerely apologize for this.We will continue to revise and improve these assets wherever possible through future updates.Thank you once again for your patience. Full details of the update are listed below.■ EXTRA Difficulty AddedA new higher difficulty, EXTRA, has been added.EXTRA allows you to continue playing beyond the length of the existing difficulties, with special rules applied during the later waves.EXTRA Late-Game RulesFrom Wave 80 onward, allowing a wave boss to escape will result in an immediate game over.From Wave 81 onward, the game will end immediately if 60 or more monsters remain on the field.From Wave 81 onward, the next wave will begin automatically once all regular monsters have spawned.An explanation of EXTRA’s special rules has been added to the difficulty selection screen.Separate warning messages will appear when entering Waves 80 and 81.■ 8 New Characters AddedNew EX CharactersEX Suika IbukiEX Tenshi HinanawiEX Hata no KokoroEX Shion YorigamiNew PH CharactersPH ClownpiecePH Sunny MilkPH Luna ChildPH Star SapphireRecipes, unique skills, Last Words, icons, effects, character BGM, sound effects, and multilingual tooltips have been added for each character.■ Game Speed Function Added and ExpandedYou can now switch between 1× and 2× game speed.Press F to change the ga...
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• Patch Notes·12 Jul 2026Official

  [Update Delay Notice]

  Hello, this is the developer of Touhou Defense ~ Ai Test in Touhou ~.First of all, I sincerely apologize to everyone who has been waiting for this update.After completing development and conducting final testing, I discovered a critical bug that affects gameplay.The fix is currently in progress. However, I believe releasing the update without sufficient testing could cause even greater inconvenience, so I have decided to postpone today's scheduled update.I'm truly sorry for not being able to keep the promised schedule.I will fix the issue as quickly as possible and release the update once I have confirmed that everything is working properly.Thank you for your patience and understanding.
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• Patch Notes·8 Jul 2026Official

  [Emergency Update Notice]

  Hello, this is the developer of Touhou Defense Tale ~ AI Test in Touhou ~.We recently identified abnormal leaderboard records that could not be verified as legitimate gameplay on the Lunatic Time Attack leaderboard.To maintain a fair ranking environment, those records have been removed, and the leaderboard validation system has been strengthened to prevent similar issues.In addition, several gameplay issues and balance adjustments have been made.Changes■ New FeatureYou can now change a character's attack target by right-clicking.Character Balance AdjustmentsStage 1Wriggle: Increased Attack RangeNazrin: Increased Attack RangeStage 2Mystia: Increased Attack SpeedLily White: Increased Attack PowerChen: Increased Attack RangeStage 3Keine: Increased Attack Speed & Spell DamageNitori: Increased Attack Speed, Spell Activation Rate, and Slow EffectStage 4Marisa: Increased Attack Speed, Spell Activation Rate, and Spell DamageStage 5Youmu: Increased Spell Activation Rate and Spell DamageSakuya: Increased Spell Activation Rate and Bleed DamageReisen: Increased Attack Power and Spell DamageStage 6Yuyuko, Kaguya, Byakuren: Major BuffsRemilia, Utsuho: Minor BuffsArcanaChen, Momiji, Hong MeilingIncreased Attack Speed2nd Spell activation rate increased to 40%Increased Spell DamageParseeIncreased Attack SpeedIncreased Damage AmplificationCirnoIncreased Attack SpeedIncreased Slow EffectIncreased Spell Activation RatePHAll PH characters except Sanae have been buffed.EXReimu: Increased activation rate for all spells, increased Last Word damageMarisa: Increased Attack Speed and activation rate for all spellsMokou: Major buffs to all spellsYukari: Major buffs to all spellsSuwako: Increased Divine Synergy effect and spell activation rateKoishi: Increased 3rd Spell activation rate, slightly reduced damageNue: Increased activation rate and effectiveness of all spellsMonster BalanceWave 10 Boss Rumia: HP -10%Wave 20 Boss Cirno: HP -10%Wave 30 Boss Hong Meiling: HP -5%Easy Quest Daiyousei: HP...
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