IMHO.

Touhou Kanjuden ~ Legacy of Lunatic Kingdom. vs Touhou Seirensen ~ Undefined Fantastic Object.

Touhou Kanjuden ~ Legacy of Lunatic Kingdom. and Touhou Seirensen ~ Undefined Fantastic Object. both land in Action, Indie on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Action, Indie on Steam. Touhou Kanjuden ~ Legacy of Lunatic Kingdom. (2019) is 1 year older than Touhou Seirensen ~ Undefined Fantastic Object. (2020). Touhou Kanjuden ~ Legacy of Lunatic Kingdom. scores higher on Steam reviews (99.3% positive) than Touhou Seirensen ~ Undefined Fantastic Object. (94.4% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Which should you pick?

Choose Touhou Kanjuden ~ Legacy of Lunatic Kingdom.

Choose Touhou Kanjuden ~ Legacy of Lunatic Kingdom. if it carries the stronger Steam consensus at 99.3% positive across 423 reviews.

Choose Touhou Seirensen ~ Undefined Fantastic Object.

Choose Touhou Seirensen ~ Undefined Fantastic Object. if it matches what drew you to this matchup. Touhou Seirensen ~ Undefined Fantastic Object. launched in 2020.

Both Touhou Kanjuden ~ Legacy of Lunatic Kingdom. and Touhou Seirensen ~ Undefined Fantastic Object. sit in Action and Indie on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.

Side-by-side comparison

Touhou Kanjuden ~ Legacy of Lunatic Kingdom. vs Touhou Seirensen ~ Undefined Fantastic Object. — Steam metadata comparison
Touhou Kanjuden ~ Legacy of Lunatic Kingdom. — Steam game coverTouhou Kanjuden ~ Legacy of Lunatic Kingdom.Touhou Seirensen ~ Undefined Fantastic Object. — Steam game coverTouhou Seirensen ~ Undefined Fantastic Object.
Released20192020
GenresAction, IndieAction, Indie
PlatformsWindowsWindows
Steam DeckDeck PlayableDeck Playable
Price14.99 USD14.99 USD
Steam reviews99.3% positive (423 reviews)94.4% positive (144 reviews)
MultiplayerSingle-player onlySingle-player only
Developers上海アリス幻樂団上海アリス幻樂団

Side by side

Touhou Kanjuden ~ Legacy of Lunatic Kingdom. vs Touhou Seirensen ~ Undefined Fantastic Object. — FAQ

Which is better, Touhou Kanjuden ~ Legacy of Lunatic Kingdom. or Touhou Seirensen ~ Undefined Fantastic Object.?
On Steam reviews Touhou Kanjuden ~ Legacy of Lunatic Kingdom. scores higher (99.3% positive) than Touhou Seirensen ~ Undefined Fantastic Object. (94.4% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Touhou Kanjuden ~ Legacy of Lunatic Kingdom. is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
Should I play Touhou Kanjuden ~ Legacy of Lunatic Kingdom. or Touhou Seirensen ~ Undefined Fantastic Object. first?
If you want chronology, Touhou Kanjuden ~ Legacy of Lunatic Kingdom. (2019) came out before Touhou Seirensen ~ Undefined Fantastic Object. (2020). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are Touhou Kanjuden ~ Legacy of Lunatic Kingdom. and Touhou Seirensen ~ Undefined Fantastic Object. similar?
They overlap on Action, Indie on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
Touhou Kanjuden ~ Legacy of Lunatic Kingdom. vs Touhou Seirensen ~ Undefined Fantastic Object. · imho.run