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!
All Reviews:
Mostly Positive (193) - 72% of the 193 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 (12)

November 13

Zero Caliber Update - 13 November

Hey guys!

In the past few days we've been working hard on fixing issues that initially came up since the release.
Known issues we're working on are at the bottom.

Thank you all for supporting us, and as always, send your feedback and suggestions our way on Discord or here so we can resolve issues as fast as possible!

Gameplay fixes:

  • Misaligned hand position compared to real life controller position fixed for certain guns [WiP] - easier to use gunstocks
  • Less instant death on coop missions, improved player kill zones
  • Weapon unlock fixes on the maps (e.g. Python)
  • Hail mission computer download objective fixed
  • Improved AI - baddies are much tougher now
  • 'Hail' mission with better combat areas
  • Fixed the bugged walls in the lobby, you can’t walk through them anymore
  • In Co-op, players falling behind will get teleported to the actual checkpoint instead of dying
  • Minor dialogue adjustments

Multiplayer level selector fixes:

  • Previous/next arrows fixed
  • Locked pictures for the host fixed
  • Level type filter improved
  • Server list listing dummy servers when switching pages fixed

Sound fixes:
  • Last shot sound effect for the revolver/shotguns fixed
  • Improved explosion sounds

Graphical improvements:
  • Improved lighting, no darkness inside houses and warehouses
  • Outside lighting fine-tuned
  • Improved optimization for certain hardware configurations


The following issues are known and are currently being worked on:

  • Misaligned hand position compared to real life controller position
  • Multiplayer server list: people from different regions might not find each other’s servers
  • Snap turning for Vive controllers
  • Occasionally there is no sound on Oculus
  • AI is constantly being improved
  • Graphics optimization
21 comments Read more

November 10

The future of Zero Caliber VR

Now that Zero Caliber's Early Access has started, you might be wondering... What’s next?

First we issue fixes for the current maps (you might have noticed some graphical issues, random bugs).

We have received tons of feedback from you. We want to make the game as good as it can be, so we’ll spend the next month mostly on these. We also have a lot of improvements in mind for current maps, check the patchnotes and play them if they get an update. In the meantime, level designers can work on...

10-20 minutes fights, compact area, best suited for Co-op and PVP. We want to have at least 6-8 of these by the time of full launch. When at least 3 of those are in the game...

the planned length of the campaign is 6 missions (as long as the current ones). One of these takes about 1-1.5 months to make so it will always be presented in a major patch. While the designers are busy with these, the coders can work on...

We'll start testing around the end of Q1 2019. We have big plans, but we have to make playable maps (see above) first, balance the guns and the game itself. Also have to expand the frameworks, currently it’s in a very rudimentary state.

In a few weeks. We had to delay it to make Steam release as smooth as possible. (And it still was rocky, but we made it!)

Once our porting team finishes working on A-tech we’ll get to the colossal task of making this game available on PSVR.

Anything else? Yes, a lot! We've almost finished mountable turrets, heavy machine guns, they’ll be added in a few months, we have at least a dozen guns and attachments waiting to be integrated, shotguns will become pump action, and a lot more! (Night-time missions anyone?)

You guys provide valuable feedback, thank you for that! Keep it up, and we together can make this the best game ever!
26 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!


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

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