Source SDK Alternatives

    Source SDK is described as 'The Source SDK is a software development kit compiled by Valve Software that is used to create maps or mods for the Source engine, with the exception of Left 4 Dead, Left 4 Dead 2, and Alien Swarm' and is an app in the Development category. There are nine alternatives to Source SDK for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is Unreal Engine, which is free. Other great apps like Source SDK are Stride Game Engine (Free, Open Source), Urho3D (Free, Open Source), Open 3D Engine (Free, Open Source) and SmartShape (Free, Open Source).

    This page was last updated Feb 17, 2021

    1. Unreal Engine is a professional suite of tools and technologies used for building high-quality games across a range of platforms. Unreal Engine’s rendering architecture enables developers to achieve stunning visuals and also scale elegantly to lower-end systems.
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Android
      • iPad
      • Xbox
      Stride (formerly Xenko) is an open-source C# game engine designed for the future of gaming. It comes with a full toolchain and is especially well suited to create realistic games but allows you much more!.
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Android
      • iPhone
      • Raspberry Pi
      Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released under the MIT license. Greatly inspired by OGRE and Horde3D.
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    2. Open 3D Engine (O3DE) is an Apache 2.0-licensed 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.
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      Your project’s smart 3D digital twin as a Service. SmartShape (formerly Minko) is a technology to develop and design rich, interactive and universal 3D applications targeting computers, web browsers and mobile platforms.


      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • iPhone
      • iPad
      Maratis is a portable, simple and visual game development tool designed for artists and developers. The Engine has been tested on Windows, Mac, Linux and iOS and can be used virtually on any platform. Maratis is Free and Open-source.
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    3. Welcome to GameGuru, the easy game maker. Our mission is to create the easiest and most enjoyable game creator. Join us and our great & enthusiastic community on this journey.
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      • Windows
      UnrealEd (UEd for short) is the level editor used to create levels for Unreal engine games (eg UT2004 or Killing Floor). Built-in scripting language called UnrealScript allows for editors to customizing game content.
      • FreeProprietary
      • Windows
      • Linux
      • Lua
      The Cafu Engine is an all-purpose, modern 3D graphics engine and game development kit, feature complete to get you started quickly.
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    Showing 9 of 9 alternatives