I Am Sakuya FPS: Lunarian Invasion Cover Art

I Am Sakuya FPS: Lunarian Invasion

FPS 2.40 GB 5.5K views

Game Overview

A Lunarian assault turns Gensokyo into a brisk, colorful shooting gallery, with Sakuya Izayoi taking center stage as its knife-throwing, time-bending defender. I Am Sakuya FPS: Lunarian Invasion reworks Touhou Project characters and spellcard energy into a fully 3D first-person campaign built around quick reactions and aggressive movement. The mood is playful rather than grim, pitting the elegant Scarlet Devil Mansion maid against adorable but dangerous enemies, elaborate arenas, and imposing bosses. Beneath the cute character designs lies a straightforward action game that expects players to keep firing, dodging, and making smart use of Sakuya’s signature power.

Each of the ten levels sends Sakuya through hidden enemy facilities, where combat encounters alternate between corridor skirmishes, open arenas, and boss fights. A varied weapon selection gives players different answers to swarming foes and tougher targets, while thrown knives and conventional firearms keep the action from relying on a single tool. Stopping time is the key mechanic: it creates breathing room during heavy bullet patterns, lets players reposition, and opens opportunities to line up decisive attacks before the action resumes. Progress comes from pushing through increasingly demanding stages, learning enemy behavior, conserving health and ammunition where necessary, and adapting to each boss’s attack rhythm.

Its strongest appeal comes from the unusual collision of classic arena-style FPS combat with Touhou’s bright visual identity and Sakuya’s iconic time manipulation. Rather than attempting the dense projectile patterns of a traditional Touhou shoot-’em-up, it translates that pressure into first-person encounters where spatial awareness matters as much as aim. The campaign’s compact structure makes it a good fit for players who want a focused burst of stylized action instead of a huge open world or endless loot grind. Fans of Touhou, retro-leaning indie shooters, and games such as Serious Sam with a more anime-inspired presentation should find plenty to enjoy, while newcomers can appreciate it as a short, accessible FPS with a distinctive protagonist.

Screenshots

Installation

  1. Select the Download button at the top of this page to open UploadHaven.
  2. On UploadHaven, wait for any countdown, then select Free Download. Optional: UploadHaven Pro for faster downloads.
  3. When complete, extract the archive to a I Am Sakuya FPS: Lunarian Invasion folder using 7-Zip.
  4. Open the extracted folder and start the game normally.
  5. For errors, check Setup Guide & Troubleshooting below. Keep your security software enabled.

System Requirements

  • OS *: Windows 8/10/11
  • Processor: Intel i5 processor or greater
  • Graphics: NVIDIA 1050 TI or higher or AMD 570 series or higher
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Setup Guide & Troubleshooting

How do I fix missing DLL errors for I Am Sakuya FPS: Lunarian Invasion?

After extracting I Am Sakuya FPS: Lunarian Invasion, navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.

What should I do if the downloaded file is corrupted?

The full archive is 2.40 GB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.

Do I need to run the game as administrator?

Usually, no. Start the game normally from the extracted folder. If you see a permissions or save error, check that the folder is writable and follow the game's documented fix. Only grant administrator access when a trusted game's specific setup requires it.

How do I update my GPU drivers for this game?

I Am Sakuya FPS: Lunarian Invasion requires a NVIDIA 1050 TI or higher or AMD 570 series or higher or equivalent. Update your NVIDIA or AMD drivers to the latest version for the best performance.

The game won't launch — what should I try?

Check that extraction completed and your PC meets the system requirements. Note any error message before choosing a fix. If it identifies a missing runtime, install the required DirectX components or Microsoft Visual C++ Redistributable from Microsoft.

My antivirus is blocking the game — is it safe?

A warning needs to be investigated; the download source alone cannot confirm that a file is safe. Keep your security software enabled and review the detection details. Do not run or restore a flagged file unless you have verified that it is a false positive. If you are unsure, leave it quarantined.

Need more help? Browse our FAQ & Troubleshooting Guide for solutions to common issues.
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