Touhou Seirensen ~ Undefined Fantastic Object. similar games & best alternatives

Touhou Seirensen ~ Undefined Fantastic Object.

PC (Microsoft Windows) • 2020

Should you play it?

アレは何だ? 鳥か? 妖精か? 謎に満ちた未確認幻想物体が、君を未知の世界に誘う! ファンタスティックでレトロな弾幕シューティング幻想

What works

  • Innovative ufo resource mechanic adds strategic depth
  • High skill ceiling with rewarding mastery
  • Memorable soundtrack and character designs
  • Multiple characters and shot types for varied playstyles
  • Strong replayability and challenge

Things to keep in mind

  • Steep and sometimes inconsistent difficulty spikes
  • Ufo mechanic can be frustrating and tedious
  • Limited accessibility for newcomers
  • No cooperative or social gameplay features
  • Some rng elements affect resource collection

What to play next

Top picks

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More competitive

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From the same developer

From the same developer, ranked by motivational fit.

Similarity map

How to compare these games

Compare nearby games

Each card is a nearby game on the similarity map, compared with Touhou Seirensen ~ Undefined Fantastic Object.. Swipe sideways to move between games. Titles already listed in What to play next are left out.

  • Cover and title: open that game’s page.
  • What works / keep in mind: the same highlights as the desktop comparison panel.
  • Bars: the main motivational differences versus this game.
How to use the graph

Similarity map

Each dot is a game placed from its motivation profile relative to this page’s game. Direction shows which motivation differs most; distance along that axis shows how large the gap is.

  • Purple star: this page’s game at the centre — everything is relative to it.
  • Direction: each axis is a main motivational difference vs this game (e.g. more / less competitive).
  • Distance on an axis: how large that difference is (ring scales show +/− points).
  • Coloured chips: click to highlight games that mainly differ on that motivation; click again to reset.
  • Dotted line: link between this page’s game and the one selected for comparison.
  • Hover a dot to preview that game in the panel on the right; click to keep that comparison.
  • Scroll or double-click the chart to zoom.

How to read the map This is a polar difference map: direction = which motivation differs, and distance = how much (same units as the sidebar deltas).

Swipe to compare nearby games with Touhou Seirensen ~ Undefined Fantastic Object.. These titles are not in What to play next.

Touhou Seirensen ~ Undefined Fantastic Object.: Broadly representative of its motivational profile, with a few distinct shifts. Motivations that often define this kind of title include Violence, Survival, Fellowship, Intimacy. Here, the score leans higher than usual among comparable games on Thrill. It leans lower than usual among comparable games on Relaxation, Leadership.

Last update: 25/08/2026