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士機(SIKI)
A 3D rail shooting game. Skillfully control the aerial combat humanoid "Shiki" to smash through obstacles and defeat approaching enemies! There are also fantastic bonus scenes!

This game is marked as containing 'Frequent Nudity or Sexual Content.' You are seeing this game because you have set your preferences to allow this content.

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Features
Single-player
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔
Japanese ✔ ✔ ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“As a solo indie developer, I'm launching in Early Access to gather player feedback and refine the game into a polished 90s arcade-style 3D shooter.
The high-difficulty gameplay requires real player input for balance tweaks and control optimization. I'm committed to ongoing development, regular updates, and seeing this through to full release.”

Approximately how long will this game be in Early Access?

“About 2 years”

How is the full version planned to differ from the Early Access version?

“EA Version: 1 core stage + 5 bonus scenes. Basic Weapon/Evasion, Bonus/Destruction.
Full Version:
• New weapons added, level suppression weapons, fusion feature (Yuri)
• Additional stages (5-7, boss strengthening)
• Numerous bonus scenes added
• New modes (difficulty adjustments, destruction-related achievements)
• Added story (uncover the secrets of this world)
• Photo mode (free angle)
• Online rankings (highly desired)
5x the content, enhanced playability!”

What is the current state of the Early Access version?

“The Early Access version of "SIKI" is currently in a playable state with core gameplay mechanics fully implemented. Players can engage in 3D shooting action, using machine guns and missiles to defeat enemies in intense battles. Key features include:
・Smooth controls for piloting your mech, with responsive shooting and evasion mechanics.
・Dynamic explosion effects, sound design (including scene-specific music), and visual enhancements for immersive combat.
・A complete first stage featuring enemy waves, a final defense line breakthrough, and an encounter with an enemy carrier.
・A bonus scene with additional challenges and rewards to extend playtime.

All core features described in the "About This" section are already available in this version. However, the game currently includes only one main stage plus the bonus scene. We plan to add more stages, enemies, and content through updates during Early Access to expand the game's scope.For more details on the implemented features, please refer to the "About This" section above.”

Will the game be priced differently during and after Early Access?

“We plan to increase the price as we add new content and features.”

How are you planning on involving the Community in your development process?

“Communicate on the X/Steam forum: Post progress once a week and vote for feedback (weapons/achievements/photo mode). Bugs are addressed immediately, and popular requests are prioritized (e.g., adding destruction achievements). The direction is decided based on everyone's voices!”
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This game is not yet available on Steam

Planned Release Date: Mar 19, 2026

This game plans to unlock in approximately 2 weeks

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Mature Content Description

The developers describe the content like this:

The app contains adult content and frequent nudity/sexual content

About This Game

The 3D shooter popular in arcades in the 90s is back as a Bishoujo game!

[Story]

A near-future world where the Imperial Japanese Navy still exists. Pilot the aerial combat humanoid drone "Shiki" and annihilate enemy forces!

[Game Features]

・High-Speed ​​3D Shooting: Freely move in eight directions to traverse the battlefield.

・Two Types of Emergency Evasion: Easily avoid barrages of bullets with roll evasion and sudden deceleration!

・Powerful Weapons: Crush your enemies with rapid-fire machine gun fire and precision lock-on guided missile attacks.

・Various enemies and boss battles: From waves of small enemies to giant bosses, you'll face a relentless challenge!

・High score attack: Clear the game with a high score and unlock fascinating bonus scenes!

・High difficulty arcade style: The tension of one-hit deaths. Packed with addictive elements for excellent replay ability!

Controls are extremely simple: just move up, down, left, right, dodge, and shoot. While keyboard controls are supported, a dedicated game controller is highly recommended (high difficulty!). This game was created entirely by a single developer. Character, mecha, and background models were all original. This is a completely original work that does not use any paid assets. Estimated play time: 30 minutes to 1 hour (More stages will be added in the future!)

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

We use AI for some script generation and music generation.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 (64-bit)
    • Processor: Intel Core i5-6400 or AMD FX-8320 (or equivalent)
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GeForce GTX 1060 4GB or AMD Radeon RX 580 8GB
    • DirectX: Version 11
    • Storage: 2 GB available space
    • Additional Notes: Requires a 64-bit processor and operating system.
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10/11 (64-bit)
    • Processor: Intel Core i5-8400 or AMD Ryzen 5 1600 (or equivalent)
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GeForce RTX 3060 or AMD Radeon RX 6600 XT
    • DirectX: Version 12
    • Storage: 2 GB available space
    • Additional Notes: Requires a 64-bit processor and operating system. Supports offline play.
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