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Game Development · head to head

jMonkeyEngine vs O3DE

jMonkeyEngine logo

jMonkeyEngine

Game Development

Java-based 3D game engine

From
Free
Rated
-
Full reviewWebsite
O3DE logo

O3DE

Game Development

Open 3D Engine - Professional game engine

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: jMonkeyEngine jMonkeyEngine is a code-first Java library with no bundled editor; the engine itself ships no scene editor; 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
  • They diverge on capability: jMonkeyEngine covers Physics engine (Bullet), O3DE covers Modular architecture.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which jMonkeyEngine and O3DE actually diverge.

Attributes where jMonkeyEngine and O3DE differ
AttributejMonkeyEngineO3DE
PlatformsWindows, Macos, Linux, AndroidWindows, Macos, Linux, Ios, Android, Playstation, Xbox
Founded20032021

Identical on both: starting price (Free), pricing model (free), free tier (Yes), user rating (Not yet rated), category (Game Development).

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 jMonkeyEngine

  • Physics engine (Bullet)
  • Scene editor
  • Lighting and shadows
  • Skeletal animation
  • Java
  • Bullet Physics
  • Maven
  • Android support

Only in O3DE

  • Modular architecture
  • Physics engine
  • Animation tools
  • Lighting system
  • Visual scripting
  • C++
  • Python
  • Lua

Both cover

  • 3D graphics rendering
  • Audio system
  • Material system
  • Particle effects
  • Open-source
  • Local deployment
  • Mobile deployment
  • Windows support
  • Macos support
  • Linux support

What people use each for

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

jMonkeyEngine

  • Writing 3D games in Java against a BSD-licensed open source enginenot O3DE
  • Using the engine as a plain Java library inside an existing Gradle or Maven buildnot O3DE
  • Building desktop 3D applications with LWJGL renderingnot O3DE

O3DE

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

Where each one falls short

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

jMonkeyEngine

  • jMonkeyEngine is a code-first Java library with no bundled editor; the engine itself ships no scene editor
  • The optional jMonkeyEngine SDK is a NetBeans-based tool maintained separately from the engine, so it lags the engine release cycle
  • Projects must be written in Java and wired up through Gradle, Maven or a hand-rolled build
  • Choosing the DIY route means providing your own build, source layout, editor, runtime packaging and workflow
  • Support runs through community Discussions and Discord rather than a vendor channel

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

Pricing, plan by plan

jMonkeyEngine

Free
  • FreeFree
    • Full engine
    • Java support
    • 3D graphics

O3DE

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

Which should you pick?

Choose jMonkeyEngine if

  • You need physics engine (bullet).
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Android.
  • You also want scene editor.
jMonkeyEngine review

Choose O3DE if

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

Questions people ask

Is jMonkeyEngine or O3DE better?
Neither clearly leads. jMonkeyEngine starts at Free and O3DE at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, jMonkeyEngine or O3DE?
jMonkeyEngine starts at Free and O3DE at Free.
Does jMonkeyEngine or O3DE run on more platforms?
jMonkeyEngine runs on Windows, Macos, Linux, Android. O3DE runs on Windows, Macos, Linux, Ios, Android, Playstation, Xbox.
Can I use jMonkeyEngine for free?
Both have a free tier, so you can try either at no cost before committing.
What is jMonkeyEngine best used for?
jMonkeyEngine is most often used for writing 3d games in java against a bsd-licensed open source engine, using the engine as a plain java library inside an existing gradle or maven build, building desktop 3d applications with lwjgl rendering. Of those, writing 3d games in java against a bsd-licensed open source engine and using the engine as a plain java library inside an existing gradle or maven build are not what O3DE is typically brought in for.
What can jMonkeyEngine do that O3DE cannot?
jMonkeyEngine covers Physics engine (Bullet), Scene editor, Lighting and shadows, Skeletal animation. O3DE covers Modular architecture, Physics engine, Animation tools, Lighting system. Both handle 3D graphics rendering, Audio system, Material system, Particle effects.

Answered from the vendors’ own pages

jMonkeyEngine: How much does jMonkeyEngine cost?

jMonkeyEngine is completely free to download and use. The engine is released under the BSD-3 Permissive license with no account requirements, splash screens, or licensing fees. Setup takes minutes with no costs or subscriptions.

Source
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
jMonkeyEngine: Can you donate to jMonkeyEngine?

Yes, jMonkeyEngine accepts voluntary donations to support ongoing development. The project also operates a merchandise store where all proceeds are donated to the main project fund, but donations are entirely optional.

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
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