Touhou Seirensen ~ Undefined Fantastic Object.

Last updated: 2025-10-01

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Summary
  • Exceptional and diverse soundtrack
  • Highly enjoyable and challenging gameplay
  • Appealing characters and artwork
  • Extreme and inconsistent difficulty
  • Frustrating Bentler/UFO system
  • Complex UFO mechanic
Touhou Seirensen ~ Undefined Fantastic Object. header

Categories

Bullet-hellResource ManagementCollection GameStrategic PlanningHigh Score ChasingSkill-Based MasteryCharacter-based Combat

Emotions

Frustration21%Satisfaction20%Enjoyment12%Excitement8%Appreciation7%
Reviews
(sample size)
133
Helpful reviews
65%
Unhelpful reviews
34%
Protest reviews
1%
Positive points
298
Negative points
176
Gameplay points
242
Perf. points
0
Rec. points
45
Misc points
18
Point
Exceptional and Diverse Soundtrack
Description
The game's music is universally lauded as superb, divine, and consistently high-quality, with many tracks considered among the best in the Touhou series. The BGM is well-composed, diverse, and syncs perfectly with the gameplay, enhancing the overall experience.
Importance
87%
Highly Enjoyable and Challenging Gameplay
Description
Players consistently praise the game for its fun, challenging, and innovative gameplay mechanics, particularly on Easy and Normal difficulties. It's considered a masterpiece and one of the best, most unique installments in the series, offering a fair challenge and high replayability.
Importance
73%
Appealing Characters and Artwork
Description
The game features a cast of cute, cheerful, and humorous characters, with specific favorites like Kogasa, Byakuren, and Nue. The character designs and overall artwork show significant improvement, contributing to the game's immersive and whimsical atmosphere.
Importance
71%
Innovative UFO Collection System
Description
The UFO collection system is a standout feature, described as fun, strategic, and dynamic. It acts as a constant mini-game, allowing players to 'order what they need' (like lives, bombs, or points) and providing resources that make the game more forgiving and aid in clearing stages, even for beginners.
Importance
47%
Engaging Boss and Stage Designs
Description
Reviewers highlight the unique, dynamic, and visually interesting boss patterns, especially in Stage 6. The combination of emotional music and bullet patterns in later stages creates an excellent and intense experience, with specific praise for the Stage 6 boss fight's spell cards.
Importance
26%
Strong Playable Character Options
Description
The game offers excellent and unique playable character choices. Sanae's debut as a playable character is noted, with Sanae B being powerful for clearing and scoring. Marisa B is praised for her aggressive playstyle and decent stage performance, while Sanae A and Reimu B also offer strong, quirky shot types.
Importance
25%
Gorgeous and Challenging Bullet Patterns
Description
The bullet patterns are described as gorgeous, rhythmic, unique, and well-crafted, with clear and comfortable coloring. They blend perfectly with the music, creating a tense yet exciting atmosphere, and are challenging but beautiful to navigate.
Importance
21%