
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
- Click the green button below to be redirected to UploadHaven.
- Wait 15 seconds, then hit “Free Download.” (Free downloads may be slower — upgrade to UploadHaven Pro for faster speeds.)
- Once downloaded, right-click the .zip file and choose “Extract to I Am Sakuya FPS: Lunarian Invasion.” (You’ll need 7-Zip for this.)
- Open the extracted folder and run the game as administrator.
- Enjoy! 🎮 If you see missing DLL errors, check the _Redist folder inside and install what’s needed.
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
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.
Why should I run the game as administrator?
Right-click the game executable and select "Run as Administrator" to avoid save file issues and permission errors. This is especially important on the first launch.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
Try running in compatibility mode, install the latest DirectX runtime, or install the All-in-One VC Redist Package.
My antivirus is blocking the game — is it safe?
Antivirus false positives are common with pre-installed games. Temporarily pause your antivirus during extraction to prevent it from quarantining game files. You can re-enable it after the extraction completes.