Touhou Seirensen ~ Undefined Fantastic Object.

Players frequently experience frustration due to the game's extreme difficulty, particularly with specific bosses like Ichirin and Shou, and challenging bullet patterns. The UFO mechanic is a major source of frustration, often leading to accidental deaths, conflicting with dodging, and requiring difficult memorization and planning, especially when it changes colors unexpectedly or leads to 'UFO greed'.

Satisfaction stems from overcoming the game's high difficulty, especially achieving a 1cc (one credit clear) or beating the Extra Stage. Players also find satisfaction in the game's aesthetic qualities, such as the music, artwork, and unique character designs, as well as successfully mastering the innovative UFO system and developing complex strategies.

Enjoyment is primarily driven by the game's engaging music, which enhances the experience of dodging bullet patterns. The challenging yet fair gameplay, unique characters, and the innovative UFO mechanic also contribute significantly to players' enjoyment and replayability.

Excitement arises from the game's overall quality, including its music, bullet patterns, and rich worldview. Players are excited by the novel mechanics, the accessibility for beginners, and the feeling of accomplishment, particularly when encountering memorable elements like Byakuren's theme or the Extra boss.

Players appreciate the game's replayability, gameplay variety, and high polish. The music, character writing, and the depth of ZUN's work, especially within the broader Touhou Project, are highly valued, along with the unique UFO system and atmospheric visuals.