The undead never stop coming… but neither do you!
Mow down relentless hordes of zombies with wild weapons, devastating skills, and game breaking synergies in this fast-paced bullet heaven survival game crafted by a solo dev. Whether playing alone or teaming up in couch co-op, every run is chaotic, challenging, and full of surprises.
10 Survivors - 60 Skins
Choose from 10 unique heroes and collect over 60 skins to customize your survivor.
60+ Skills
Customize every run based on your game style, you can find anything you want! from critical chance builds, to lifesteal, summoning and more! Combine 28+ passive skills with powerful synergies to create game-breaking builds and unleash carnage your own way. Every run is different!
2 Players Couch Co-op Chaos
Double the firepower, double the mayhem! Team up in local couch co-op and fight side by side in the ultimate test of survival. Work together to create devastating builds, cover each other’s backs, and see if you can outlast the swarm!
5 Unique Scenarios
Five unique scenarios with their own mechanics, a gripping story on surviving the apocalypse.
30 Collectibles
Uncover 30 unique collectibles that reveal the events leading up to and during the apocalypse. Each one adds a piece to the puzzle of what really happened.
The Enemies
Face relentless hordes of Zs, but beware the Alpha Zs:
Sneaky – Silent but deadly.
Fatty – Slow, but explosive!
Fast – Quick and relentless.
Tanky – Tough and hard to take down.
Goliath – A force of nature that few can defeat.
This is just the beginning. As a passionate solo developer, I’m committed to delivering frequent updates with new heroes, weapons, skills, enemies, modes, and more, all based on your feedback! let's grow together!

macOS Warning: If you see a compatibility notice, the game still runs on macOS 10.15+ but is not notarized. You may need to allow the app manually in System Preferences → Security & Privacy.
Update 2.1 is the biggest and most important release in ZK1L4s history.\n\nThis isnt just a patch, its a reinvention of the game.
ZK1L4 has evolved into a Left 4 Deadstyle roguelike survival shooter, where every run is a desperate journey through five handcrafted apocalypse scenarios. The game is now more cinematic, more intense, and far more replayable.\n\n Whats New in 2.1
A New Game Identity
ZK1L4 is no longer just a bullet-heaven, it is now a mission-driven zombie survival roguelike:
Clear scenario goals
[/*]Stronger pacing
[/*]More tension between waves
[/*]Runs that feel like survival stories
[/*]
Heavily Upgraded Visuals
Almost every part of the game has been visually improved:
New lighting and atmosphere
[/*]Clearer combat readability
[/*]Stronger enemy presence
[/*]Improved effects and animations
[/*]
The apocalypse has never looked this good.
[hr][/hr]New Elite Enemy: The Golden Sir
A rare, powerful new zombie has joined the horde.
If youre lucky, or unlucky, youll encounter the Golden Sir, an elite enemy that drops special rewards when defeated.\n\nHigh risk. High reward. Total chaos.
[hr][/hr]Deeper Builds & Better Balance
Skills and synergies have been tuned to:
Feel more impactful
[/*]Create stronger identities per run
[/*]Encourage creative and broken builds
[/*]
Every run now feels more distinct, more powerful, and more fun.
[hr][/hr]Refined Co-op Chaos
2-player couch co-op is smoother, more readable, and more explosive than ever.\nCoordinate builds, save each other, and fight your way through the apocalypse together.
[hr][/hr]The Definitive ZK1L4 Experience!
Whether youre a returning survivor or jumping in for the first time, Update 2.1 is the best way to experience ZK1L4.
The world is darker.\nThe zombies are deadlier.\nThe builds are crazier.
Good luck out there
Minimum Setup
- OS: Linux distribution released after 2016
- Processor: Intel Core 2 Duo E8200. AMD Athlon XE BE-2300. Raspberry Pi 4Memory: 2 GB RAM
- Memory: 2 GB RAM
- Graphics: Intel HD Graphics 5500 (Broadwell). AMD Radeon R5 Graphics (Kaveri)
- Storage: 1 GB available space
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