Alternative apps to Unity:
  • 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
  • 4.5
    348 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
  • 4.5
    85 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
  • 4.9
    16 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
  • 5 /5
    1 votes
    Doomsday Engine is a Doom / Heretic / Hexen port with enhanced graphics.
    • Freeware
    • Windows/macOS/Linux