Unreal Discover sample overview

Updated: May 11, 2026

Overview

The Unreal Discover sample is a Mixed Reality reference architecture built on the Oculus fork of Unreal Engine 5.5. It features EOS networking as a GameInstanceSubsystem, custom interaction with haptic feedback (UDiscoverInteractionComponent, UHapticButton), colocation via shared spatial anchors, Scene API room setup, DroneRage and MRBike sub-applications, bundled plugins (OculusHandTools, MetaXRAudio, MetaXRPlatform, OculusUtils), and supports up to 8 players.

View the sample source code on GitHub⁠.

What you will learn

Mixed Reality reference architecture patterns

EOS networking as a GameInstanceSubsystem

Custom interaction components with haptic feedback

Colocation via shared spatial anchors

Scene API room setup and integration

Sub-application architecture (DroneRage, MRBike)

Requirements

Meta Quest 2, Quest 3, or Quest 3S

Oculus fork of Unreal Engine 5.5

EOS account

Get started

Clone the repository.

Open the project using the Oculus fork of Unreal Engine 5.5.

Configure EOS credentials in the project settings.

Ensure Room Setup is completed on the target Quest device.

Deploy to device for single-player testing or multiple devices for multiplayer.

Explore the sample

File / Scene	What it demonstrates	Key concepts
Main scene	MR reference hub	Scene API room setup, passthrough
DroneRage	Combat sub-application	Spatial interaction, physics
MRBike	Locomotion sub-application	Mixed reality movement
UDiscoverInteractionComponent	Custom interaction	Haptic feedback, input handling
UHapticButton	Pressable UI	Physical button simulation
EOS GameInstanceSubsystem	Networking layer	P2P multiplayer, up to 8 players
Colocation system	Shared space	Spatial anchor sharing

Runtime behavior

The app initializes with Scene API room setup to map the physical environment. Players interact with the world using UDiscoverInteractionComponent, which provides haptic feedback through UHapticButton elements. DroneRage and MRBike are available as sub-applications within the shared space. EOS networking runs as a GameInstanceSubsystem, managing P2P connections for up to 8 co-located players aligned via shared spatial anchors.

Key concepts

EOS networking as GameInstanceSubsystem

Networking is implemented as a GameInstanceSubsystem, providing a clean lifecycle that persists across level transitions:

UCLASS()
class `UEOSNetworkingSubsystem` : public `UGameInstanceSubsystem`
{
    GENERATED_BODY()
    // Manages EOS P2P connections across the game instance
};

Custom interaction components

UDiscoverInteractionComponent and UHapticButton provide a unified interaction system with haptic feedback for mixed reality UI elements.

Colocation via shared spatial anchors

Players establish a shared coordinate space through spatial anchor sharing, enabling co-located multiplayer where all participants see virtual content in the same physical positions.