Zero Caliber is a military FPS developed exclusively for VR. Customize your weapons on-the-fly, fight alongside your friends in Co-op (PvP coming soon!) and use your tactical skills to accomplish the mission: saving humanity! Engaging story, realistic weapon handling and physics in an immersive environment!
Recent Reviews:
Mostly Positive (57) - 75% of the 57 user reviews in the last 30 days are positive.
All Reviews:
Mostly Positive (538) - 76% of the 538 user reviews for this game are positive.
Release Date:
Nov 9, 2018

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We do believe that if we want to develop the best game possible, we have to work with our players. Our goal is to develop a realistic military FPS for Virtual Reality headsets that every player loves and enjoys. Without player feedback, we couldn’t accomplish that. Moreover, when the full version of the game will be accessible, we would like it to be free of any defect or bug.
That is why we need players’ feedback, even during development. We take every feedback, opinion, critical thought seriously, so please don’t hesitate to contact us. We’re listening, and as an addition, you will become part of the development process!”

Approximately how long will this game be in Early Access?

“We’ll release the full version when every aspect of the game is polished, and we’re fully satisfied with its state. :) Currently the estimated release date is early 2019.”

How is the full version planned to differ from the Early Access version?

The full version will also contain:
- The 2nd half of our story
- A lot more weapons and attachments
- Shorter, challenging Co-Op missions

What is the current state of the Early Access version?

The game's core mechanics are layed down: physics based interaction, customizable weapons with various attachments.
The EA version will contain the tutorial, first half of the story and a Co-op missions.

Will the game be priced differently during and after Early Access?

Price may increase moderately when we release.

How are you planning on involving the Community in your development process?

"We regularly monitor our community channels, including our forum on Steam, our Discord and our social media (Facebook and Twitter). We extensively test the game/its updates before it goes live, but if players find a bug, they can report it and we’ll fix it as soon as physically possible.
We also take the best/most upvoted ideas and add them into the game.

Our quest is to develop the best, most immersive military tactical shooter available for VR!"
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Notice: Requires a virtual reality headset. See the VR Support section for more info.

Buy Zero Caliber VR


Recent updates View all (21)

April 3

Zero Caliber devblog: mid-April's content update - New map!

Hey everyone!

The day of the next update is approaching, you can expect it to hit mid-April!
It'll have new content as well as many improvements and fixes. We just had to share with you what is coming, we hope you are as excited as we are!

Please keep in mind that all the footage and images seen below are WiP, and don’t represent the final state.

A new map!

We’ve been working on a stormy, really immersive small mission: No Man’s Land! Get your thunder buddy, and play through the map in Co-op!
Subscribe to our YouTube channel so you won’t miss the map’s teaser coming this week.

A surprise weapon!

Do you remember that scene in Rambo with the mounted .50 Cal turret? Yeah… You can now use it in Zero Caliber!
We’ve added a stationary, mounted .50 cal turret to the game. Are you prepared for the action?

AI animation and behaviour

It seems like our AI finally gave up chasing butterflies. The overhauled animation is coming! They will feel much more life-like, with smooth movement and behaviour.
Besides the animation improvements, their aiming accuracy will be tweaked as well according to the difficulty you choose. Prepare for a real challenge on ‘hard’ difficulty!

Attachment physics

Swapping attachments on your guns is already possible. Now you can do it in a badass way! Grab another one, and knock the used one off of your gun in an instant.

Grabbing animations

We’ve improved the hand animations when grabbing different bolts, sliders etc.

We’re also working on a different weapon belt system with fixed weapon positions for easier handling, and countless other improvements and fixes. Complete patchnotes will accompany the update itself, these are just the most exciting additions of the next update that we wanted to share with you.

For more info about the PvP’s development, sneak peeks and behind the scenes, follow our social media, our subreddit or join our Discord server!

Thank you all for your continuous support, keep the feedback coming!
XREAL Games Team

21 comments Read more

March 22

Zero Caliber Update - Steyr AUG, Movement changes, Initial setup guide, FPS independent recoil and a lot lot more!

Hey guys!

Since the last update, we've been working very hard on fixing core issues, and optimizing the game's performance.
We haven't forgotten about content either, another community favourite weapon got added: the Steyr AUG with new attachment and surprises!
You'll see a new, initial setup guide to help you choose the settings of your liking.

It's hard to summarize all the improvements, fixes and content, so please do read the patchnotes below.

Player / control improvements

  • Player movement changes:
    - Increased top speed while running
    - Slower base speed, slower strafing, slower going backwards
    - Slower crouch and prone speed
    - Player can only run when not aiming (depending on weapon type)
    - Run can be automatically, or by-input activated (can be set in the options menu)
  • Fixed disappearing weapon slot
  • Initial Setup Menu added: it will pop up only at the first launch after this update: players are introduced to some of our most critical and useful settings
  • Improved main hand-, and trigger pulling finger animation
  • Player body stays on the ground after dying
  • Force pull fixed after lever release
  • Player weapon grab on death fixed

Gfx and optimization

  • Benchmark Feature under graphics settings: Auto-Set your game to 90 fps any time!
  • Optimized weapon and attachment textures (smaller size, same quality)
  • Lobby armory performance optimizations
  • All scopes and crosshairs have sharper reticle now
  • Significant Disk Size improvement of the Packaged Game (From 30 GB to 15 GB)
  • ‘Retaliation’ lighting iteration: brightened up some dark spots of the map
  • Fixed ‘Retaliation’ foliage lighting errors


  • Steyr AUG bullpup assault rifle with new attachments. Check the unlock requirements in the new info panel!
  • New info panel added to the armory, showing the rank requirements for unlocking each weapon and attachment
  • Improved, frame rate independent recoil
  • New skins hidden on different maps (The first community skins, courtesy of Koretskyy. Thank you mate!)
  • Weapon and skin unlock fixes
  • Projectile spawning is synced from client to server
  • Improved hand poses: Better primary gripping of weapons, improved mag holding poses
  • Lasersight improvements: lit when playing on high quality. A flare indicates its position when enemy holds his weapon directly at player
  • Scopes zoom levels changed, now all scopes can be used in Close-to-Mid range combat scenarios. Default zoom has the widest FOV.


  • WiP, experimental attachments hidden as easter eggs in different maps (Magnified Holo Sight, HAMR Hybrid Scope, Canted Iron Sights Rail, Drum Kit Mag for Kriss Vector)
  • 2 new laser attachments with new colors
  • Bipod: players are now able to use it as a vertical grip
  • Improved lasersight positions because of the new laser attachments
  • Laser sight visual is same for teammates and allies


  • The first story map, ‘Timber’ is divided into 2 parts with reworked layout and gameplay. Previously this map was huge, which negatively affected performance.


  • Co-op: respawn grab fixed on client side
  • Co-op: weapon drop from hand upon player death improved
  • Co-op: floating weapons on player leave fix
  • AI: reworked targeting and aiming system for more balanced fights

Unfortunately, some of our AIs decided to chase butterflies instead of shooting, so we had to delay the implementation of the new animations. We're fixing the bugs, but we need more time to sort it out. Will be included in a later update, we're sorry about it.


  • Updated semi gun sounds.


As you can see, we've been focusing on fixing and improving things. Bugs might still occur, if you see anything unusual, please report it in the 'Bugreports' section here on Steam, or via our Discord server.
Your help is greatly appreciated!
If you have any suggestions, ideas, contact us here, via e-mail, social media or Discord, we're all ears!

New maps, the PvP mode and further improvements are in development, stay tuned for the news about them!

XREAL Games Team
29 comments Read more
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About This Game


Zero Caliber VR is a first-person tactical shooter developed by XREAL Games exclusively for premium Virtual Reality headsets.
The story brings the player to a dystopian United States in the not too distant future where physics-based interaction combined with hyper realistic weapon handling and stunning graphics will make you feel like you’re physically part of the action. Fight either alone, or with your friends throughout the whole campaign, which is fully playable in Co-Op.
Action-oriented story, gripping gunfights, realistic weapons with an on-the-fly swappable attachment system. Immersion like you’ve never felt before in a VR military shooter!
Available for Arcades on SpringboardVR


Handle, aim and reload your weapons with real-life movements! We modeled the in-game weapons based on their real-life counterparts paying extreme attention to detail. Each weapon has its unique reloading method that you have to learn and practice to fully master them.
If you fancy explosions, just grab a grenade and throw it at the enemy. After you pulled the pin of course.
Stay in the open for too long and you’re dead. Try to find cover instead, duck, crouch, sneak, peek around a corner, clear obstacles with real-life movements. Military combat isn’t all about shooting. Being aware of your surroundings, the terrain, and working together with your squadmates are all part of a successful mission. Don’t let your fellow soldiers down!


Everyone has a unique playstyle. Is accuracy your thing? Put a laser sight on your assault rifle and take accurate shots in semi-automatic mode, or just grab a sniper rifle. Are you more of a shoot first, ask later type of person? Take a shotgun, or dual wield your machine guns in fully automatic firing mode. Be careful though, recoil can make your job really difficult! Combine your favourite gun with your favourite attachments on-the-fly to find out which variation suits you the most!


Water is life. Someone should’ve made that clear before humanity started poisoning Earth with microplastics. Now water is death. People are fighting for drinkable water, for survival.
The military tried their best to keep order, but inevitably they got overwhelmed. That’s when mercenaries appeared.. then entire private armies.. and then when hope started to fade away came the religious cults. The most fearsome of all is a secretive organization worshipping Tlaloc, the aztec God of rain. The “Tlalokii”, as they call themselves. Their motto? “Join us or perish”. What is even worse, they know something that can change the fate of humanity.
Be part of this action-packed, story-driven VR adventure where you fight alongside your fellow soldiers trying to keep order… or what’s left of it anyway.


We place realism above anything else. Graphics and ambiance are crucial parts of this, that’s why we took extreme care in audio and visual design. Explorable open environment, stunning graphics, background noises, realistic weapon sound effects.

A constantly developing military VR FPS experience that will surely make you forget that you are in a video game!

Mature Content Description

The developers describe the content like this:

First person shooter violence.

System Requirements

    • Requires a 64-bit processor and operating system
    • OS: Windows 7 - 64 bit
    • Processor: Intel i5-4590
    • Memory: 4 GB RAM
    • Graphics: NVIDIA GeForce GTX 970
    • Storage: 20 GB available space
    • Additional Notes: Requirements are for Early Access
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Intel i7-4770
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GeForce GTX 1070
    • Storage: 20 GB available space
    • Additional Notes: Requirements are for Early Access

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