The definitive survival overhaul for the Zone.
S.T.A.L.K.E.R. Anomaly GAMMA (Grok's Automated Modular Modpack for Anomaly) is a hardcore, curated survival experience built on top of S.T.A.L.K.E.R. Anomaly. Designed for stalkers who want a deeper, more immersive journey, GAMMA integrates over 400 hand-picked mods into a single, finely balanced package. No manual modding required, just install, survive, and adapt.
Built for Survival. Tuned for Immersion.
A Zone That Evolves With You
GAMMA adapts S.T.A.L.K.E.R. Anomaly into a longer-form, higher-stakes experience. It encourages cautious exploration, smart inventory management, and tactical engagements across a world that’s as deadly as it is dynamic.
With multiple difficulty presets, faction options, and curated progression paths, every run feels different yet always true to the heart of the Zone.
Community-Built. Curated with Care.
This isn’t just a modpack, it’s the result of thousands of hours of refinement from passionate fans. Designed to be stable, lore-respectful, and challenging, GAMMA is regularly updated and supported via dedicated Discord channels and install tools.
Anomaly was just the beginning. GAMMA is the test of your true stalker instincts.
Disclaimer: S.T.A.L.K.E.R. G.A.M.M.A is a fan-created modification for S.T.A.L.K.E.R. games by GSC Game World. It is not an official product of GSC Game World and is a derivative work based on their original S.T.A.L.K.E.R. games.
You must own ONE of the following games:
From bug fixes, restored cut scenes, quests and characters to completely freshly-made new content, Mods are an essential part of the video game preservation. We teamed-up with these community-driven projects creators to offer you this list of handpicked Mods. Combining our strengths, these are now accessible right away, already installed within the base game for the smoothest experience.
The Mod you’re about to enjoy is the work of passionate fans who wanted to share their love in an even more meaningful manner. While every effort has been made to ensure a high-quality, stable experience, the original developers or publishers aren’t responsible for any issues that may occur from using this content.
Edited on: December 1, 2025
Posted on: December 1, 2025
Grokitach
Verified ownerGames: 18 Reviews: 1
I made GAMMA
And that project is a love letter to a formidable modding community, to the STALKER franchise, and to everyone who wants a good survival game in one of the best settings there is: The Chornobyl Exclusion Zone <3
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Posted on: December 1, 2025
TheFallenHeroe
Games: 39 Reviews: 1
Arguably the best survival experience
I've been playing this game on and off for about 5 years. The zero to hero grind is essentially what kept me engaged in this immersive world. Every ounce of progress is meaningful and requires a significant amount of effort and it just feels amazing when you are finally dominating the region you are in. If you really like the STALKER franchise and wants to re-explore the Zone and if you like hardcore tactical shooters like Tarkov, this game is for you. And hey its free, can't get any better than that especially nowadays... My only issue with this game is that its not really potato friendly, at least unless you are willing to lower the graphics by a lot (and by that I mean playing in DX9).
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Posted on: December 1, 2025
NotVenento
Games: 30 Reviews: 1
A thoughtfully crafted, meaningful pack.
I have around 500 hours in Gamma on the pre-gog version. This is easily one of the best stalker modpacks, if not modpacks in general. It really sets a standard where quantity and quality are both met in equal measure. It's crazy that this pack is being made and maintained by one dude for free, with the contributions of an entire community of course. New mechanics and content are added in healthy amounts while at the same time being tuned for a balanced, paced playthrough. I never felt like a mechanic was thrown in for the hell of it, engaging with the repair and medical systems for example helped immerse me in the stalker experience. Progression in general is very well done. I found that finding and maintaining equipment is much more meaningful since not every problem is solved with money, and that progress is more slowly paced than other stalker experiences. The pack also looks much better than its vanilla anomaly counterpart, and arguably the original trilogy. The new shading and lighting mods are up to date and much better than previous iterations of the pack. I also feel that the game is not that hardcore, at least if you prepare for the journey ahead. These latest versions have tutorials for all the new and overhauled systems. The daunting medical system starts to feel more intuitive when you realize all you're doing is building up temporary hp to convert into permanent hp. The new tools system is easier to digest when you realize you can find everything you need in stashes. All these new systems and the overhauled A-life lead to a much more immersive open world than many AAA titles. The pack is also quite malleable if you don't happen to like specific systems, mods, or mechanics. one of the Ms in Gamma stands for Modular. You will find decent support in the stalker gamma discord server, barring some channels which I don't like.
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Edited on: December 1, 2025
Posted on: December 1, 2025
Seedl1ng
Games: 0 Reviews: 1
Stalker Gamma is peak survival game
Ever wanted a Survival game that doesn't hold you hand and is an actual challenge to survive and thrive than this game is for you. Stalker Gamma is by far one of the best ways to play stalker but it wont be easy. I like to describe this game to people as the dark souls of survival games so keep that in mind with how hard it is. But let me tell you this is one of the most atmospheric games i have ever played truly keeps you in the world your in. Grok is an amazing dev working on this modpack and is always coming out with great updates recommend joining the discord server to see whats going on with the updates. There is a ton of different main story quest and other factions to play and even in your first play through there will be plenty more for you to do and with the ability to add more mods on top of gamma its truly one of the most repayable games i have played personally have done 4 play through on this game each different factions. Honestly wont spoil to much of the game cause its meant to be played blind so go in and have fun there is a tutorial system in the game now that explains the mechanics that arent as easy to understand without an explanation so read those very important you do. Have fun out there Stalker
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Posted on: December 1, 2025
SACEINF
Games: 10 Reviews: 1
The best singleplayer experience for me
I’m in my thirties and have played more games than I can count. I’m especially fond of shooters and RPGs. I loved the original S.T.A.L.K.E.R. titles and even read the novels. GAMMA is the ultimate modpack that pulls everything together into a coherent, fully realized experience. Be warned: It’s challenging and unapologetically rough. It looks and sounds incredible. You can get lost in the progression grind, or you can slow down and just immerse yourself in the atmosphere, the tension, and the phenomenal soundtrack. Enemy AI is actually competent - far better than in many newer AAA shooters. If you want to play a game that rewards learning its systems, respects your time, and constantly generates memorable moments within its sandbox, play this. Nothing else comes close. Aaand it is going to become even better. It is my gamer dream come true!
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