Alternative apps to Unity:
  • 4.3
    137 votes
    The Adobe AIR runtime enables developers to use HTML, JavaScript, Adobe Flash software, and ActionScript to build web applications that run as standalone client applications without the constraints of a browser.
    • Freeware
    • Windows, macOS, Linux
  • 4.4
    386 votes
    Unreal Engine is now free. Free for game development. Free for Virtual Reality. Free for education. Free for architecture. Free for film.
    • Freeware
    • Windows, macOS
  • 5
    10 votes
    The Unigine SDK allows the development of 3D graphics software for simulation, visualization, scientific research, video games, virtual reality systems and more.
    • Freeware
    • Windows, Linux
  • 5/5
    2 votes
    Doomsday Engine is a Doom / Heretic / Hexen port with enhanced graphics.
    • Freeware
    • Windows, macOS, Linux
  • 4.9
    17 votes
    The most powerful game development platform is now available to everyone. Full engine source code. All features. No royalties. No obligations. No license fee.
    • Freeware
    • Windows
  • Not rated yet
    0 votes
    The Godot Engine is a free, all-in-one, cross-platform game engine that makes it easy for you to create 2D and 3D games.
    • Freeware
    • Multiple OS
  • 5/5
    1 votes
    Open 3D Engine (O3DE) is a multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.
    • Freeware
    • Windows