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Watch trailer on Steam ↗Sentry System
Penguinium · Published by Penguinium
6 user reviews — 67% positive (6 reviews) · 13 achievements
Last updated 28 Sept 2026
Sentry System is a tower defense roguelike where you collect, modify and upgrade your sentries while progressing through a network of challenging encounters.
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£6.69
Lowest price we've ever recorded
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£6.69
Price history
4 Sept 2026Lowest: £6.69 · Highest: £6.696 Oct 2026
Indie, Strategy · 2024 · More £5 - £15 games
Navigate Sentry System's intricate tower defense challenges, where each encounter tests your sentry upgrades and strategic skills. Experience the thrill of constant evolution as you progress through Penguinium's innovative indie challenge.
About this game
Sentry System combines modern roguelike systems with classic tower defense gameplay. Collect and modify sentries, make use of interactive environments, and face off against varied enemies and boss encounters.
Choose from a wide selection of sentries. Change damage types, add new status effects, and improve stats. Create powerful builds and combos with smart use of status interactions. Explosions that trigger explosions, stunning lightning chains and massive damage over time effects are waiting to be built. The most powerful effects may come with large drawbacks, but hard choices can lead to great payoffs.
Use your sentries to charge devastating explosive devices, power up amplifying antennas using generators, move map tiles, and much more. Use the environment to your advantage and defeat enemies in creative ways. Different enemies will require different counters, and mastering the environment is key to defeating challenging bosses.
Encounter a wide variety of enemies with powerful abilities. Enemies may shield others, accelerate, teleport, explode when defeated, and much more. Different sentries and status effects counter different enemies, so choose your weapons carefully.
Face off against challenging bosses in large encounters that test your skill with sentries as well as environmental mechanics. Every boss is an intricate puzzle where skill and strategy will be rewarded.
Advance through a randomized network. Take routes that lead to items you need, trade some of your resources for others, and make the best of randomized choices. Resource management between battles is critical to success, as is building a varied roster of sentries that can tackle any challenges you face.
Use your sentries to build mazes and control the routes your enemies take. Lead them down winding paths, past explosive devices, and into deadly choke points. Set up perfect positions for your sentries to maximize their damage.
Modify Your Sentries
Choose from a wide selection of sentries. Change damage types, add new status effects, and improve stats. Create powerful builds and combos with smart use of status interactions. Explosions that trigger explosions, stunning lightning chains and massive damage over time effects are waiting to be built. The most powerful effects may come with large drawbacks, but hard choices can lead to great payoffs.
Interactive Environments
Use your sentries to charge devastating explosive devices, power up amplifying antennas using generators, move map tiles, and much more. Use the environment to your advantage and defeat enemies in creative ways. Different enemies will require different counters, and mastering the environment is key to defeating challenging bosses.
Diverse Enemies
Encounter a wide variety of enemies with powerful abilities. Enemies may shield others, accelerate, teleport, explode when defeated, and much more. Different sentries and status effects counter different enemies, so choose your weapons carefully.
Dynamic Bosses
Face off against challenging bosses in large encounters that test your skill with sentries as well as environmental mechanics. Every boss is an intricate puzzle where skill and strategy will be rewarded.
Roguelike Progression
Advance through a randomized network. Take routes that lead to items you need, trade some of your resources for others, and make the best of randomized choices. Resource management between battles is critical to success, as is building a varied roster of sentries that can tackle any challenges you face.
Classic Tower Defense Gameplay
Use your sentries to build mazes and control the routes your enemies take. Lead them down winding paths, past explosive devices, and into deadly choke points. Set up perfect positions for your sentries to maximize their damage.
System Requirements
Will my PC run this? →Minimum
Minimum:
- Requires a 64-bit processor and operating system
- OS: Windows 10 64 Bit
- Processor: Intel i5, 7th generation (or equivalent)
- Memory: 1 GB RAM
- Graphics: NVIDIA GeForce GTX 1050 (or equivalent)
- DirectX: Version 11
- Storage: 1 GB available space
- Additional Notes: Expected 60 FPS at 1080p resolution on minimum requirements
Recommended
Recommended:
- Requires a 64-bit processor and operating system
Supported Languages
English
Latest news
Patch NotesOfficial
Update June 16
-Increased diversity and complexity of level layouts in the first two areas. -Fixed fps-dependent enemy movement jitterRead full article on Community Announcements (Penguinium)
