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:
Very Positive (40) - 82% of the 40 user reviews in the last 30 days are positive.
All Reviews:
Mostly Positive (577) - 77% of the 577 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!"
Read more
Notice: Requires a virtual reality headset. See the VR Support section for more info.

Buy Zero Caliber VR


Recent updates View all (23)

May 10

Zero Caliber devblog: what will the next update bring? New weapons, skins, OST & more!

Hey Everyone!

Another month, another update is approaching.
This time we’re focusing on core gameplay features like the much awaited weapon skin system, loadout save system, a new cover system for the AI, two new weapons: the BAR and Beretta with unique skins and a game soundtrack.

You can expect the new update to go live within 2 weeks.

Here’s what we’re planning to include in the update:
Disclaimer: all images, gifs and videos seen below show WiP states and don’t represent their final state!

2 new weapons!

Many of you were asking for a WW2 inspired weapon. We chose the BAR!

We’ve also added another community favourite weapon: the Beretta.

Both weapons are coming with unique, beautiful skins which can be unlocked by reaching the required rank. This brings up a new feature we’ve been working on…

Weapon skin system!

Currently the only way you can obtain unique skinned weapons is if you find a hidden weapon on one of the maps and you keep it with you at all times.
That’s about to change!
We’re introducing the weapon skin system:
  • you’ll be able to unlock skins by ranking up (same as with weapons and attachments)
  • you’ll be able to equip any skin you previously unlocked for a particular weapon in the reworked armory before going to combat
This way you’ll never lose your favourite skin again!

Loadout saving system

You like switching between different loadouts depending on your current mood? We got you!
You’ll be able to save different loadouts, then equip yourself with them in an instant.

AI cover system

We’ve once again sent our AI back to military school. They’ve learnt how to use covers!
Expect a much smarter and more challenging AI to fight!


What is a game without a cool OST?
We’ve been composing an original soundtrack for the game, it is now time to implement it. You can listen to a short sample of it here:

Player animations

In Co-op mode you might’ve noticed that your Co-op mate’s animations aren’t as fluid. We’ve improved it a lot by adding animations (crouching, prone etc.) so your teammate’s movement will look much better and smoother.


These are the main features the next update will include, the detailed patchnotes will accompagny the update itself.
Are you guys as excited as we are?

Follow our Facebook page and join our Discord server if you don’t want to miss additional content about the upcoming update!

XREAL Games Team
21 comments Read more

April 24

Zero Caliber Content Update - New map, M2 Browning heavy machine gun, reworked player belt, overhauled AI animations, faster ranking & more!

Hey everyone!

The much awaited mid-April content update is live!
You can now experience what a stormy battlefield would feel like on our new map: No Man's Land!

Several .50 Cal heavy machine guns are waiting for you to use throughout all maps. We have reworked the player belt system based on your feedback, and the promised new AI animation and behaviour is also here.
We're very excited, can't wait to see your feedback!

Check out the full patchnotes below:


  • New small mission: No Man’s Land. Fight the Tlalokii in the stormy Mongolia, near the Russian border.

Player/control improvements

  • Reworked player belt: holstered weapons are now in a fixed position (as opposed to the previous random positions); you can slot and unslot weapons from a larger distance and weapons lerp to slots - super sleek.

  • Better Oculus Touch interaction: Pressing
    (and holding) trigger only grabs ammo, pressing (and holding) grip grabs the holstered weapon (Vive Controllers has already been working by this logic). Same for sliders (trigger) and secondary grab (grip) interaction.
    Oculus Touch ‘B’ button function:
    - can turn laser attachments on/off (if a laser is the only attachment on the weapon)
    - can change the zoom value for scopes or the colour of the crosshair (if it is the only attachment on the weapon)
    - bolt catch release on various weapons
  • When grabbing pistols, the secondary hand lerps to grabbing position.
  • Improved animation when grabbing bolts, sliders etc. with a cool lerping effect.

  • Fixed unintentional fire mode change when quickly removing attachments.
  • Improved hand positions for all magazines


  • Mounted .50 Cal heavy machine gun is now ready to use throughout most maps in fixed positions.
  • Safety fire mode removed from weapons: the safety mode could be confusing at times, so we’ve decided to remove this function from all weapons.
  • Fixed: pistol magazines can not be knocked out with other magazines anymore - can only be released with the release button.


  • You can now change attachments on your weapon by knocking them off with another attachment. How badass is that?

  • Similarly, you can now knock out mags with any other mag you find, doesn’t have to be the same type.


  • New AI animations: enemy- and teammate AI got better animations, their movement is much more smooth and fluid. Their behaviour is also improved.

  • Difficulty dependant AI accuracy: the AI is now more accurate in hard difficulty, less so in normal- and easy.
  • More challenging enemies on normal and hard difficulties.
  • Increased the amount of XP per level, so you can gain ranks faster.
  • Start Next Level button now resets the next mission and starts it from the beginning in single player mode.


  • Rain effect on the new map
  • Tons of graphical optimizations


  • Minor sfx update


The player belt change and the AI overhaul are both significant changes, please send your feedback our way here on Steam, on Discord or via e-mail!
If you encounter any bugs, please report them in the 'Bugreports' section.

As always, thank you all for your support, keep the suggestions and feedback coming!

XREAL Games Team
20 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

What Curators Say

23 Curators have reviewed this product. Click here to see them.

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