

Threshold Sector
CalamaroBlu · 2025 · Action Roguelike, FPS, Roguelite, PvE, Shooter
PC
9 user reviews78% · 9
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About Threshold Sector
WELCOME UNDERGROUND
Threshold sector is an athmospheric stealth FPS with procedurally generated levels.
Explore the dark hallways and twisted rooms of a mysterious complex, gather loot and equipment to improve your chances of survival, complete objectives, avoid traps and most importantly, find a way out.
FEATURES
- Explore a dark underground facility - Procedural generation with hand made modules will ensure you'll never play the same level twice.
- Expect the unexpected - Danger is behind every corner in the complex, expect things to go bad quickly. Very quickly.
- Scavenge to survive - Search every nook and cranny to find weapons, attachments, equipment and loot to survive the expedition and escape in one piece - dying means losing everything you're carrying with you.
- Thrive underground - Improve your hideout to fight more efficiently and survive more often, this is your home for now, make sure to take care of it.
Survive the facility
Everything down here wants you dead. From mutated creatures to weird anomalies to the facility structure itself.
Experience random power outages, spreading toxic gas, unsettling semi-alive matter, disease infected rooms and much more... and much worse.
Stay on your toes
Death is always one false step away. The complex is flooded with traps and every wrong move could mean more than just a scratch: the whole facility can hear you and will get back at your noise and mistakes.
Find the truth
No contact with the outside world, noone is there for you and you don't even know where "there" is.
The company you worked for just left you here to rot. You need to find out why, what happens down here and how to get out.
DEMO VERSION
This demo version contains a single handmade level, a few weapons and most of the core systems. Think of it as a proof of concept, with a focus on testing the main mechanics and basic gameplay loop.
In the future a second demo will be released, with more features, systems and content, which will aim at finding a balance in the overall experience.
The last step in the development of Threshold Sector will be the full 1.0 release, with the complete range of features and content currently planned.
Wishlist to keep updated.
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
DISCLAIMER: Due to a bug, it is currently impossible to progress past the seventh mission. That said, I do really like this game and there’s still a large amount of sandbox content regardless, so I’m giving it a positive review as I wish to see it gain traction. [hr][/hr] This is a criminally underrated game with a phenomenal atmosphere and a great visual style. It’s just difficult enough to challenge the player without being outright frustrating, but the one thing that does piss me off is that random waves of enemies would often spawn somewhere on the map and swarm me within the first five minutes of a run. The dev states that this was to help speed up expeditions, but as a stealth-based singleplayer game, I really think that each player should be able to work through these expeditions at their own pace. I’ve expanded upon this in my discussions thread. If you’re a fan of Metal Garden or GTFO, this is definitely the game for you. There are some minor issues, but it’s clearly a passion project the dev has put a large amount of effort into developing, and although I’d say that it’s too expensive for its own good, I’d hate to see it abandoned due to a lack of sales. Don’t give up, …3 found this helpful
Big fan of this game. Its got its problems, but I love it Edit: Come back developer. Don't abandoned this game!2 found this helpful
A diamond in the rough. Absolutely love the vibes and the core experience. I've been wanting a game like this for the longest time. However, the way some enemies respawn, and random waves of conduct rats, can absolutely demolish you since the items you get are few and far between. And I'm not saying that the game should be easy, I really like that's hostile and mean to the player, but sometimes if the game only gives you certain resources, you are gonna die. It's less about difficulty and more like being at the mercy of the RNG. It needs some rebalancing, some patching up, but there's something special here.1 found this helpful
Recommended, but with caveats. The atmosphere and combat are excellent. Ammo scarcity, bleed mechanics, and dangerous enemies make every encounter tense with stealth that actually matters. The core gameplay is strong and does a great job creating immersion. The main issues are clarity and identity. Procedural levels often feel directionless, with large rooms that are often completely empty, etc. Objectives are poorly communicated; I extracted via elevator and still got a “mission failed” without ever being clearly told what success actually required. There is some permanent progression through hideout upgrades, but extraction still feels underwhelming. Weapons and gear found during a run can’t be kept or reused to build loadouts, so each mission starts feeling very samey despite surviving. There’s a real gem here. With clearer objectives, tighter procedural design, and meaningful progression between runs, this could be something special.1 found this helpful
The game is fun overall, but overgrown rats are kinda not.1 found this helpful
I want to like this game, but in its current state, it does not want to be interacted with. Two crashes, one during combat, one from finishing combat, both frustrating as the game lives and dies on you successfully extracting, so anything earned in that run is null and void. And the one time I was able to successfully extract, the game said I did not extract with "materials", despite that not being defined anywhere, so I got out with a base building material, and all other items, such as ammo and the new gun I earned in the run is lost. I really want to like this game, and I will continue to play it, but I cannot in good faith recommend its current state. EDIT: The developer has pushed out a change to address the crashes, while I have not crashed yet, I have hit an infinite elevator descent where I cannot press ESC to access the menu when retrying a level.
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