Home / Games / 东方希莲船 ~ Ultimate Fatal Octopus
东方希莲船 ~ Ultimate Fatal Octopus
A Touhou Project fan-made STG, also a collab game with Vtuber Syrena. Some day a random suspicious pink UFO showed up in Gensokyo. This must be an incident! As a result, Reimu and Marisa went on a journey to solve the incident.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.
“Works very well on my system. The game has a built in Replay feature great Controller Support and two playable characters: Reimu and Marisa, both get two shot types. It's heavily inspired by "Touhou 12 Undefined Fantastic Object" there is a UFO mechanic here as well, just a…”
— a player, Steam review · 3 hrs played“fun fangame to chill, easy lunatic and very good artworks and osts”
— a player, Steam review · 19 hrs playedAchievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Fixed some bugs.
Fixed an issue where UFO scores could reset to zero under certain conditions; Fixed a keyboard input logic problem; Fixed unstable leaderboard upload issues.
Game version updated to 1.03
When practicing spellcards, the midboss BGM will now use the stage theme. Fixed some issues with keyboard config.
Game version updated to 1.02
Addjust the visual effect of Marisa's laser shooting style. Addjust the visual effect of final boss's eighth spell card.
Game version updated to 1.01
Fixed an issue of incorrect resolution when starting the game for the first time on non-16:9 screens. Optimized an issue of potential long-term lag caused by leaderboard validation. Added a new option
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-09-26.
| Genres | Action, Indie |
| Player tags | Bullet Hell · Action · Shoot 'Em Up · Shooter · Indie · Female Protagonist · 2D · Anime · Magic · Fantasy · Singleplayer · Music (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Full controller support · DualShock Controller Support · DualSense Controller Support · Steam Input API Support · Steam Cloud · Stats |
| Languages | Simplified Chinese |
| Controller | Full support |
| Achievements | 15 |
Minimum system requirements (PC)
Minimum: OS *: Windows 11 / 10 / 8.1 / 8 / 7 Processor: Intel Core 2 Duo / AMD Athlon X2 Memory: 1 GB RAM Graphics: DirectX Graphics compatible card DirectX: Version 10 Storage: 800 MB available space Sound Card: DirectSound compatible card