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Game Development · head to head

O3DE vs Unreal Engine

O3DE logo

O3DE

Game Development

Open 3D Engine - Professional game engine

From
Free
Rated
-
Full reviewWebsite
Unreal Engine logo

Unreal Engine

Entertainment

The world's most open and advanced real-time 3D creation tool

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: O3DE minimum hardware is a quad-core 2.5 GHz x86 CPU with SSE 4.1, 16 GB RAM and a DirectX 12 or Vulkan GPU with 2 GB VRAM and Shader Model 6.2; Unreal Engine 5% royalty triggered on any project exceeding $1 million in gross revenue across all revenue sources
  • They diverge on capability: O3DE covers 3D graphics rendering, Unreal Engine covers Real-time ray tracing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which O3DE and Unreal Engine actually diverge.

Attributes where O3DE and Unreal Engine differ
AttributeO3DEUnreal Engine
Pricing modelfreeUnknown
PlatformsWindows, Macos, Linux, Ios, Android, Playstation, XboxPC, macOS, Linux, PlayStation, Xbox, Nintendo Switch, iOS, Android, VR, AR
CategoryGame DevelopmentEntertainment
Founded20211991

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in O3DE

  • 3D graphics rendering
  • Modular architecture
  • Physics engine
  • Audio system
  • Animation tools
  • Particle effects
  • Material system
  • Lighting system

Only in Unreal Engine

  • Real-time ray tracing
  • Nanite geometry
  • Lumen global illumination
  • Blueprint visual scripting
  • C++ programming
  • World composition
  • Animation systems
  • Audio engine

Both cover

  • Local deployment
  • Windows support

What people use each for

The jobs each tool is most often brought in to do.

O3DE

  • Building 3D games and simulations on an open source Apache-licensed enginenot Unreal Engine
  • Robotics and industrial simulation using O3DE Gemsnot Unreal Engine
  • Projects that need full engine source access with no royaltynot Unreal Engine

Unreal Engine

  • AAA game developmentnot O3DE
  • Indie game creationnot O3DE
  • Architectural visualizationnot O3DE
  • Film and TV productionnot O3DE
  • VR/AR experiencesnot O3DE

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

O3DE

  • Minimum hardware is a quad-core 2.5 GHz x86 CPU with SSE 4.1, 16 GB RAM and a DirectX 12 or Vulkan GPU with 2 GB VRAM and Shader Model 6.2
  • Raytracing features require Shader Model 6.3
  • Disk space required is 40 GB using the prebuilt installer and 100 GB or more when building from source
  • Building the engine from source needs 2 GB of RAM per build thread on top of normal system requirements
  • On Windows the editor requires Windows 10 version 20H2 or later plus Visual Studio 2019 16.11.x, 2022 17.3.x or 2026 18.0.x with the Game development with C++ workload
  • The only primary Linux distribution for the editor is Ubuntu 22.04 LTS, and Ubuntu on 64-bit ARMv8 is experimental
  • Linux builds need CMake 3.30.0 or later, which is newer than the 3.22 shipped by default with Ubuntu 22.04
  • Wayland support is experimental, requires building from source, and is limited to the Game Launcher with no editor support until O3DE moves to Qt6
  • Linux requires a long list of additional apt library packages to be installed before building

Unreal Engine

  • 5% royalty triggered on any project exceeding $1 million in gross revenue across all revenue sources
  • Smaller mobile game ecosystem compared to Unity, with fewer optimized mobile libraries and live-ops services

Pricing, plan by plan

O3DE

Free
  • FreeFree
    • Full engine
    • Modular architecture
    • Cross-platform

Unreal Engine

Free
  • Game DevelopmentFree
    • Nanite geometry
    • Lumen global illumination
    • Blueprint visual scripting
  • Non-Game Commercial$1850/year
    • No royalties
    • Enterprise features

Which should you pick?

Choose O3DE if

  • You need 3d graphics rendering.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Playstation, Xbox.
  • You also want modular architecture.
O3DE review

Choose Unreal Engine if

  • You need real-time ray tracing.
  • You want to start without paying.
  • You work on PC, macOS, Linux, PlayStation, Xbox, Nintendo Switch, iOS, Android, VR, AR.
  • You also want nanite geometry.
Unreal Engine review

Questions people ask

Is O3DE or Unreal Engine better?
Neither clearly leads. O3DE starts at Free and Unreal Engine at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, O3DE or Unreal Engine?
O3DE starts at Free and Unreal Engine at Free.
Does O3DE or Unreal Engine run on more platforms?
O3DE runs on Windows, Macos, Linux, Ios, Android, Playstation, Xbox. Unreal Engine runs on PC, macOS, Linux, PlayStation, Xbox, Nintendo Switch, iOS, Android, VR, AR.
Can I use O3DE for free?
Both have a free tier, so you can try either at no cost before committing.
What is O3DE best used for?
O3DE is most often used for building 3d games and simulations on an open source apache-licensed engine, robotics and industrial simulation using o3de gems, projects that need full engine source access with no royalty. Of those, building 3d games and simulations on an open source apache-licensed engine and robotics and industrial simulation using o3de gems are not what Unreal Engine is typically brought in for.
What can O3DE do that Unreal Engine cannot?
O3DE covers 3D graphics rendering, Modular architecture, Physics engine, Audio system. Unreal Engine covers Real-time ray tracing, Nanite geometry, Lumen global illumination, Blueprint visual scripting. Both handle Local deployment, Windows support.

Answered from the vendors’ own pages

O3DE: Is O3DE free to download and use?

Yes, O3DE is completely free and open source, available for download at no cost under continuous development.

Source
Unreal Engine: What is Unreal Engine's royalty structure?

Unreal Engine is free upfront with a 5% royalty on gross revenue worldwide after a project exceeds $1 million in lifetime gross revenue. This includes in-app purchases, advertising, and direct sales but excludes indirect revenue.

Source
O3DE: How is O3DE funded if it is free?

O3DE is supported through optional donations and member organization contributions rather than user licensing fees.

Source
Unreal Engine: What platforms can Unreal Engine target?

Unreal Engine supports PC, VR, AR, gaming consoles, and mobile devices. The royalty fee applies across all platforms.

Source
Unreal Engine: What are Unreal Engine's graphics capabilities?

Unreal Engine 5 features Nanite virtualized geometry and Lumen global illumination, enabling photorealistic AAA workflows. Nanite replaces traditional LOD systems with 128-triangle clusters and software rasterization for superior visual fidelity.

Source
Unreal Engine: Do non-game developers pay royalties?

No. Non-game commercial teams pay $1,850 per seat per year instead of royalties. This covers enterprise use cases outside traditional game development.

Source
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