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Watch trailer on Steam ↗Solitary Sentinel
JLau Games · Published by JLau Games
7 user reviews — 100% positive (7 reviews)
Last updated 28 Sept 2026
Welcome to Solitary Sentinel, a captivating modern reimagination of Space Invaders and Missile Command, where you must defend against constantly evolving enemies by upgrading a single Sentinel. Enjoy simple controls, and deep strategic gameplay as you fend off the relentless onslaught!
£5.89
Lowest price we've ever recorded
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Price history
Action, Indie · 2025 · More £5 - £15 games
In Solitary Sentinel, guide your lone defender through relentless waves of foes. With simple controls and deep strategy, evolve your Sentinel to survive until the end of the level.
About this game
Welcome to Solitary Sentinel, a captivating single-player roguelite modern reimagination of Space Invaders and Missile Command that combines strategic depth with accessible gameplay! Immerse yourself in a world of minimalist visuals and intuitive controls as you defend against relentless waves of evolving enemies.
Key Features:
Simple Yet Deep Gameplay: Take command of a single, endlessly upgradable Sentinel in a visually clean and minimalist environment. Dive into the strategic depths with easy-to-understand controls.
Strategic Upgrades: Customize your Sentinel's abilities and strengths as you progress, adapting to the ever-changing threats and challenges. Experience the satisfaction of mastering your tactics with synergy between mechanics.
Dynamic Targeting and Aiming: Manually control the Sentinel to fine tune its aim or activate Auto Aim to free up your focus. With Auto-aim activated, you can engage enemies with the convenience of using the Sentinel's auto-targeting feature or take matters into your own hands by manually selecting your targets.
Diverse Arsenal: Explore a vast array of weaponry at your disposal, including powerful lasers, electrifying Tesla coils, mesmerizing black hole generators, and devastating meteor callers. Experiment with different strategies and weapon combinations to find the perfect defense against evolving enemies.
Progressive Difficulty: Survive more waves to unlock new difficulty levels for future runs. Challenge yourself with higher difficulty levels to unlock more powerful perks that enhance your sentinel's abilities and maximize your chances of survival.
Augmented Enemy Waves: Feeling lucky? Greatly increase challenge of individual enemy waves by augmenting them in exchange for more rewarding loot upon clearing them. Test your skills against the toughest foes and reap the rewards of victory.
Challenge Yourself
With each passing wave, the challenge intensifies as enemies evolve, becoming more cunning and formidable. Every run is different as enemies evolve different evolutionary traits, requiring different strategies to deal with. Stay vigilant, adapt your strategies on the fly, and unleash the full potential of your arsenal to survive against the odds.
Are You Ready to Defend Against the Onslaught?
Prepare for an epic battle where survival depends on your wit, skill, and strategic prowess. Can you endure the relentless assault and emerge victorious, or will your defenses crumble under the pressure? The fate of the sector rests in your hands.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS *: Windows 7/8/10 (64-bit
- Processor: Intel Core i3 or equivalent
- Memory: 4 GB RAM
- Graphics: Integrated graphics card with DirectX 11 support
- DirectX: Version 11
- Storage: 1 GB available space
- Sound Card: NA
- VR Support: NA
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
Latest news
AnnouncementsOfficial
JLau Games Launch Collection: Solitary Sentinel + Tile Tempest Bundle
Hey everyone, JLau here!I'm so incredibly excited to announce that my second game, Tile Tempest, is finally here and available right now! It's been a real labor of love, and I can't wait for you to jump in and see what I've been working on.To celebrate this huge moment, I wanted to do something special. I've bundled my first game, Solitary Sentinel, with the brand new Tile Tempest! You can grab both together in the JLau Games Launch Collection and get 10% off.And a huge shout-out to everyone who already owns Solitary Sentinel! You can still use the bundle to "Complete the Set" and get that 10% discount on Tile Tempest.Thank you so much for your support on this journey. It honestly means the world to me. I poured my heart into this, and I truly hope you have fun playing it.Happy gaming!Read full article on Community Announcements (ニホンからの男)Patch NotesOfficial
Solitary Sentinel v1.1a Release Notes
Performance OptimizationsImproved performance of black hole generator, the black hole process and the black hole shader.Improved performance of how enemies process chill and freezeBug FixesFixed Tesla Coil 8 Multi-Beam upgrade being offered before 6 Multi-Beam upgradeFixed a possible cause of random crashVisual ImprovementBlack Hole warping visual effect should be cleaner without a sharp boundaryRead full article on Community Announcements (ニホンからの男)Patch NotesOfficial
Solitary Sentinel v1.1 Release Notes
Additions Basic tutorial added to cover controls and core mechanics. Glyphs added to perk, upgrade, and weapon descriptions for quick reference. Balance Adjustments Weapon fire rates rebalanced for more consistent pacing. Enemy base stats and evolutionary traits adjusted to smooth difficulty curve. Low-cost generic basic perks added to expand options when perk points are limited Quality-of-Life Improvements Drop hitboxes enlarged for easier selection in crowded scenes.Read full article on Community Announcements (ニホンからの男)Patch NotesOfficial
Patch version v1.0a
Some minor bug fixes Release on macOS and LinuxRead full article on Community Announcements (ニホンからの男)AnnouncementsOfficial
Solitary Sentinel Has Launched on Steam!
We’re thrilled to announce that Solitary Sentinel is now officially live on Steam! Dive into our modern roguelite reimagining of Space Invaders and experience strategic depth wrapped in minimalist visuals.What’s New Since the DemoRescaling & Breakdown of Experience Gained We’ve added a clear, in-game breakdown of experience earned.Solar Storm Mechanic If no enemies fall for 60 seconds, a dynamic solar storm sweeps in, damaging both enemies and the Sentinel until one is destroyed.Faster Firing Rates Most weapons now fire more rapidly. Expect tighter target windows and faster-paced combat.Lower Upgrade Requirements Many upgrade tiers now unlock earlier. Progress through your Sentinel’s arsenal and perks more fluidly, rewarding every wave.Key FeaturesSimple Yet Deep Gameplay Command one Sentinel with intuitive controls, straightforward to learn, endlessly rich in tactics.Strategic Upgrades Customize your loadout with weapon mods and perks that synergize in surprising ways.Dynamic Targeting Switch between manual aim or Auto Aim to suit your playstyle.Augmentable Waves Increase wave difficulty for greater loot rewards and risk-reward thrills.Progressive Difficulty Survive longer to unlock higher challenge levels and new perks.Limited-Time Launch DiscountGet 20% off during launch week! Don’t miss out on this special offer to start your Sentinel journey for less.Join the FightHead over to the Steam Store Page now to grab your copy, leave a review, and share your best Sentinel runs!Play Solitary Sentinel on Steam → Thank you for your support—see you in the stars!Read full article on Community Announcements (ニホンからの男)
