About the Game
<Story>
A long time ago, an unknown meteorite came to earth. The meteorite was sleeping quietly deep in the earth, waiting for the time to wake up.
10,000 years have passed, and when humans have built civilization, a change occurs in the meteorite.
Countless alien "breeds" are born from the meteorite and quickly devour the planet.
The true identity of the meteorite was the egg of an alien life form.
The land above is destroyed, and national functions disappear. Humanity is defeated.
Those left behind are forced to live in sturdy underground shelters.
The shelter was named "Ark" and became humanity's last stronghold.
In order to take back the land, humanity has gathered its wisdom and materials and developed two "anti-bleed" combat weapons.
One is the manned weapon “Father”
One is a combat clone soldier with the appearance of a girl who becomes Father's pilot.
They live in a deserted front-line base and then go off to fight.
<Experience>
9th Sentinel Sisters is a casual action game with roguelite elements. You can easily and easily enjoy the exhilarating feeling of wiping out aliens in a desolate near-future atmosphere.
・Create your own build with 16 types of weapons and 37 types of reinforcement parts!
You can experience the exhilarating feeling of defeating a large number of approaching aliens with powerful weapons such as lasers, drills, and missiles.
・Decide the strategy route
Whether you want to take on strong enemies, strengthen your weapons, or recover damage, assess the situation and aim to clear the game!
・The mission for each stage is simple
You can concentrate and enjoy it in a short period of time.
・Choose a hero and enjoy various strategies.
<Game Features>
Roguelite casual action
Side view Twin stick
A post-apocalyptic world destroyed by aliens and a fighting girl
16 types of weapons
37 types of reinforced parts
6 heroes
Full controller
Screenshots
13 images
Version Information
Steam Patch Notes
Official update history
Thank you for playing "9th Sentinel Sisters."
[p align="start"]This update introduces new features including dashing, skills, and attributes.[p align="start"]We hope you continue to enjoy "9th Sentinel Sisters."
Introducing New Features
Battle
Added Dash
High-speed movement to evade enemies
[img src="{STEAM_CLAN_IMAGE}/44619020/3fe718adcb2d5b8a7377aabf2f3c50ebeb5004de.png"]
Added skills for each character
Two types: passive skills that activate automatically, and active skills that can be triggered at any time
Passive Skills
Accelerator (Saika): Increases dash count
[img src="{STEAM_CLAN_IMAGE}/44619020/c95821b741d1610eba482fbe6a966dbeabe3d5ff.jpg"]
Bomber (Nina): Defeated enemies occasionally explode
[img src="{STEAM_CLAN_IMAGE}/44619020/05862236c99fb710bf5840711ade5f4da09517c9.png"]
Spike (Tetra): Knocks back enemies at the dash landing point
[img src="{STEAM_CLAN_IMAGE}/44619020/03f08a896e2697d980dd999ec17ce4542dc8c596.png"]
Active Skills
Deadly (Yayoi): Fires an enhanced New Wave
[img src="{STEAM_CLAN_IMAGE}/44619020/798461c79073e8325a3e533508bca0f0641702ac.png"]
Limit Boost (Fem): Guarantees critical hits for a set duration and increases movement speed
[img src="{STEAM_CLAN_IMAGE}/44619020/cbf548a99703afba34f03807a4b62bafda02798a.png"]
Doom (Rei): Forces reload, shortens weapon reload time for a set duration
[img src="{STEAM_CLAN_IMAGE}/44619020/5099080fc64d2f1adc8a5633020841ce263d641d.png"]
Added Attributes to Weapons
Three types: Bullet-type, Energy-type, Physical/Explosive-type
[img src="{STEAM_CLAN_IMAGE}/44619020/2d38917b7245829374bc34dfdf4278f99e9b0b85.png"][img src="{STEAM_CLAN_IMAGE}/44619020/f62b78e61946c4d79ede96b3a08ef2e64f2d1efd.png"][img src="{STEAM_CLAN_IMAGE}/44619020/1043a06e63c71e3f11d0d89101a4dd81104a7ffe.png"]
Added new parts corresponding to the new attributes
[img src="{STEAM_CLAN_IMAGE}/44619020/115d2ca7f5e725b1d896c297e0d814f3cc090465.png"]
Added self-destructing enemies
[img src="{STEAM_CLAN_IMAGE}/44619020/d7f3a53cd92f75e0684ff3016c84760a962e65ce.png"]
Improved Game Experience
Changed the map confirmation screen to display tile descriptions when hovering the cursor over a tile[img src="{STEAM_CLAN_IMAGE}/44619020/76a700508d4f919c2d3627db19090204ab4a02f6.png"]
Other
Added various texts
Minor bug fixes
Thank you for playing "9th Sentinel Sisters."
[p align="start"]We have fixed the issues that occurred in Version 1.1.1.[p align="start"]We hope you continue to enjoy "9th Sentinel Sisters."
Fixed an issue where clicking “Back” in the communication log did not respond when using keyboard/mouse controls.
Thank you for playing "9th Sentinel Sisters."
[p align="start"]We have fixed the issues that occurred in Version 1.1.0.[p align="start"]We hope you continue to enjoy "9th Sentinel Sisters."
Fixed an issue where the initial setting for left-click behavior was incorrect.
Fixed other minor bugs.
Thank you for playing "9th Sentinel Sisters."
[p align="start"]This update primarily focuses on adding new features and improvements to enhance gameplay.[p align="start"]We will continue to develop various improvements and new features for future updates, aiming for releases throughout 2025.[p align="start"]Further details on updates will be announced in future patch notes.
[p align="start"]Thank you for your continued support of "9th Sentinel Sisters."
Introducing New Features and Improvements:
Enhanced Conversation Features
Added a conversation log feature.[img src="{STEAM_CLAN_IMAGE}/44619020/b4d3200c70d19ceb5a0590028b56d7caee9011cb.png"]
Added auto-advance functionality for conversation scenes.[img src="{STEAM_CLAN_IMAGE}/44619020/c34df618676af5114adb50acd94a6e9f33c499d9.png"]
Improved display of item effects during battle.[img src="{STEAM_CLAN_IMAGE}/44619020/d7bcc92dca24aac11131576ae19178df9a7c273a.png"]
Improved Game Experience
Added a visual effect where the UI color changes when 10 seconds remain on the timer.[img src="{STEAM_CLAN_IMAGE}/44619020/e4e4c6f67809f5b3cb64d7c0cd2398b33c57ff8f.png"]
Added an instant retry function for game over.[img src="{STEAM_CLAN_IMAGE}/44619020/e8e757bb18c7c979a400d4d507ace65245ab84b9.png"]
Visualized weapon cooldowns.[img src="{STEAM_CLAN_IMAGE}/44619020/98b8a4fcc8beaee996d502ca3c5365cb84dc086d.png"]
Implemented unlock notifications.[img src="{STEAM_CLAN_IMAGE}/44619020/076e339df6a1bbabc051c1b29b417f8e2e1dbebc.png"]
Improved Operability
Options and other UI elements can now be operated with the mouse cursor.[img src="{STEAM_CLAN_IMAGE}/44619020/3a99ce99a1ce6ec84be6828f4c00bedb5452300d.png"]
Added a feature to check the map after selecting a square.[img src="{STEAM_CLAN_IMAGE}/44619020/bfdef2782d4eae3ab227ab08aa3b4ec299e1c350.png"]
Enabled checking equipped parts when opening supply boxes.[img src="{STEAM_CLAN_IMAGE}/44619020/438a07899793244852dc1c68538a5478999abdb9.png"]
Content Additions & Revisions
Introduced "How to Play" and "Customization" tutorials.[img src="{STEAM_CLAN_IMAGE}/44619020/cf913d7e493dc98d6914edd5c0ac99bfb09446a8.png"][img src="{STEAM_CLAN_IMAGE}/44619020/ef7509d44d30b5948c2598b029fef10eef6aed35.png"][img src="{STEAM_CLAN_IMAGE}/44619020/c54c222b610970f1b581c0d31f24ca1831a31b20.png"]
Added initial weapon level +1 to the 5th stage effect of weapon modification.
[img src="{STEAM_CLAN_IMAGE}/44619020/6890e8a98aa826b0cd996cabf924c777d2605441.png"]
Added feedback effects to "Breakthrough" and other customization options.[img src="{STEAM_CLAN_IMAGE}/44619020/0d210c1139bf1553adc33b4d0dcbafc069f819ea.png"]
Enabled detailed build configuration checks on the result screen.[img src="{STEAM_CLAN_IMAGE}/44619020/a85fcf8aba9549bddc461301e385d6b4c40d50f2.png"]
We sincerely apologize for the lack of updates since the Early Access launch in October 2023.
We are deeply grateful to everyone who has continued to support us throughout that time.
With today’s update, we’ve significantly expanded the overall game content and added several new features.
Players who purchased the Early Access version can update to the full version free of charge.
We hope you continue to enjoy 9th Sentinel Sisters—the journey is just beginning.
▼ Additions and Changes Since Early Access
Characters
- Three new characters—Nina, Tetra, and Ray—have been added.
- A new "Talk" feature is now available on the map, allowing character conversations and events to occur.
{STEAM_CLAN_IMAGE}/44619020/ec3f44ad73f2ef1baea9cb348b6521c02a86c0e1.png - Your ending will now change depending on which character you used to clear the final missions.
Combat
- Certain enemies now drop items upon defeat.
{STEAM_CLAN_IMAGE}/44619020/66eda7c7fb4b8efe9fe3ae35d36e8e5f1949e54e.png - Epic boss battles against powerful Breed enemies have been added at the end of certain operations.
{STEAM_CLAN_IMAGE}/44619020/4cb83d28321138f84385c0bb605f29be14829708.png
Operations
- Several new operations have been added.
- A Shop has been added to the map, allowing you to trade junk for equipment.
{STEAM_CLAN_IMAGE}/44619020/7547f2eb0b0075c02f484cd6e5ffe1a4ce0b3cfe.png - A new "VR Simulation" feature lets you rematch enhanced bosses after clearing boss missions.
Other Updates
- UI improvements
- Combat balance adjustments
- Graphic enhancements
Thank you also for the numerous feedbacks.
Our development team is working hard to prepare for the official release.
We look forward to your continued support of 9th Sentinel Sisters.
Player
- Removed the limit on the number of parts you can have and made all parts available.
- Various statuses are now displayed in the pause menu during operations.
- Changed the appearance rate and calculation method of upgrades that appear when leveling up.
- Changed the calculation method of criticality correction and defensive strength.
- Changed the method of counting the number of times of resurrection.
- Adjusted the method of drawing lots for upgrade choices drawn at level-up.
{STEAM_CLAN_IMAGE}/44619020/57af64bdde1a634fe14afff7450966185bc3f70b.png
UI
- Changed the font size and color of the damage indicator when a critical hit occurs.
- Added images to some items in the manual.
Operations
- Adjusted the effect of events that occur in trace reactions.
- Weapons and parts can now be obtained before the start of combat in enemy reactions.
- Weapons and parts can now be acquired and recovered before the start of a threat enemy reaction.
- Blue and red boxes are now guaranteed to appear in supply box reactions.
- Increased the probability of the Golden Supply Box appearing in the supply box reaction.
- Adjusted the number of encryption keys required to open each supply box.
- Adjusted the number of times a supply box can be opened.
- Adjusted the HP and knockback values of enemies that come at the player quickly.
Weapons, parts, modifications
- Damage of bazookas, iai blades, and plasma cannons have been adjusted.
- Maximum levels and effects of parts have been adjusted overall.
- Effects of drill level-up have been adjusted.
- Overall effects of modifications have been adjusted.
This mini-update mainly improves the tempo and difficulty of the early stages of the game, as well as the playing environment.
Player
- The initial movement speed of the player's ship has been increased.
- Reduced experience required to level up.
Battle and enemy
- Reduced the time limit for battles caused by enemy reactions in the early to mid stages of the operation.
- Shortened the time limit for Threatening Enemy Reaction battles.
- Adjustments have been made to ease the appearance pattern and number of enemy appearances in battles in the early to mid stages of the operation.
- The movement speed of enemies moving at high speed has been slowed down.
Graphics
- Aim guides indicating the direction of fire are now displayed around your ship.
- Adjusted the background of battles caused by Threatening Enemy Reaction.
- The UI of the rank-up button in aircraft and weapon modifications has been adjusted.
Added optional items
- Added an item for adjusting the dead zone when using the gamepad in the options.
Bug fixes
- Fixed typos in the Iai blade description text.
Current Release
12339590
Uploaded Mar 20, 2024
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System Requirements
How to Install
SentinelSisters.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
409 MB
12339590
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View AllDownload 9th Sentinel Sisters for PC with a direct link or via torrent. Get the full version of 9th Sentinel Sisters for free. 9th Sentinel Sisters is a Action released by Live Wire.