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We've compiled a list of 8 free and paid alternatives to Source SDK. The primary competitors include Unreal Engine, Urho3D. In addition to these, users also draw comparisons between Source SDK and Xenko Game Engine, Maratis, Amazon Lumberyard. Also you can look at other similar options here: Games.

Unreal Engine
Free Open Source

Unreal Engine is a professional suite of tools and technologies used for building high-quality...

Free Open Source

Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released...

Xenko Game Engine
Free Open Source

Xenko is an open-source C# game engine designed for the future of gaming.

Free Open Source

Maratis is a portable, simple and visual game development tool designed for artists and developers.

Amazon Lumberyard is a free AAA game engine deeply integrated with AWS and Twitch – with full...

Game Guru

Create, play and share fun games on your PC with absolutely no technical knowledge needed!

A game and graphics engine for multiplayer, cross-platform, real-time 3D action, GPL licensed

The Source SDK is a software development kit compiled by Valve Software that is used to create maps...

Source SDK Video and Screenshots

Source SDK Overview

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. These games are packaged with their own SDKs, called the Left 4 Dead Authoring Tools, the Left 4 Dead 2 Authoring Tools, and the Alien Swarm SDK respectively. They are all extremely similar to the Source SDK, but tailored slightly to suit each game's needs.

Source SDK Features

tick-square Gaming

Source SDK Platforms

Mac Windows

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Source SDK Tags

left4dead valve dev-kit level modding mod sdk steam maps mapping game-development games

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