Completed

VaultBreak MR

A room-scale mixed reality system built in Unreal Engine and C++ that connects Quest passthrough, Sony Mocopi full-body tracking, procedural security routes, and health-driven gameplay.

RoleXR DeveloperFinal Year Project

Unreal Engine 5.6.1C++Meta Quest 3SSony Mocopi

Evaluated with 20 participants

In-game view

Overview

VaultBreak MR is a mixed reality stealth game built for Meta Quest 3S. The player's real room becomes a laser-protected vault through passthrough and room-aware route generation.

Sony Mocopi tracks the player's body so crouching, leaning, and stepping around lasers become part of the gameplay. Players can also shoot control boxes to disable selected laser sections.

The objective is simple: survive the security route, open the safebox, and grab the pearl before health reaches zero.

+0.70Confidence increase

20Playtest participants

57 / 100SUS usability score

The hardware behind it

Two devices work together to turn the player's real room and full-body movement into gameplay.

Meta Quest 3S mixed reality headset with two controllers — Meta Quest 3S
Mixed reality headset

The headset shows the real room through passthrough, then overlays the lasers, vault, HUD, and other virtual objects.

Sony Mocopi set containing six colourful wearable motion sensors — Sony Mocopi
Full-body motion sensors

Six small sensors worn on the head, wrists, hip, and ankles send the player's body movement into the game.

Quest displays the mixed reality world. Mocopi makes the player's whole body part of it.

My role

I developed the prototype as the project's XR Developer, connecting full-body tracking, mixed reality room data, and gameplay systems into one complete experience.

Full-body tracking

Sony Mocopi and Live Link
Seven body collision regions

MR gameplay

Room-aware security routes
Laser, health, and pistol systems

Game flow

Start and vault marker setup
Pearl objective and fail state

Project scope

I designed, developed, tested, and documented VaultBreak MR as my Final Year Project.

Project gallery

VaultBreak MR passthrough gameplay with red laser obstacles — **Passthrough gameplay**Laser security placed inside the player's real room.

Body collisionSeven tracked regions detect laser contact.

VaultBreak MR room check interface — **Room check**The available play space is checked before setup.

Player selecting a route marker in mixed reality — **Marker selection**The player chooses the route start and endpoint.

Generated mixed reality security route with red lasers — **Generated route**Laser gates and control boxes form the challenge.

Virtual safebox containing the pearl objective — **Final objective**Grabbing the pearl completes the mission.

Outcome

The completed prototype combined Meta Quest passthrough, Sony Mocopi full-body tracking, and physical laser-dodging gameplay. Testing with 20 participants showed an increase in reported interaction confidence, while also highlighting calibration and usability as the main areas for improvement.