The Best 44 Thinking Worlds Alternatives
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                                                    77 LikeUnreal Engine
Unreal Engine is a professional suite of tools and technologies used for building high-quality games across a range of platforms.
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                                                    22 LikeGame Editor
Game Editor is the open source game design software that gives you the power to create the games of your dreams, and, unlike other game creation tools, gives you the chance to get and change the source code of the game creator and design...
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                                                    18 LikeENIGMA - LateralGM
enigma, the extensible non-interpreted game maker augmentation, is an open source cross-platform game development environment derived from that of the popular software gamemaker.
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                                                    17 LikeSuperpowers
Superpowers is an HTML5 development environment for making 2D and 3D games. It can be extended with plugins and lets you collaborate in real-time.
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                                                    16 LikeAdventure Game Studio
Adventure Game Studio provides the tools to make your own adventure, for free! Bring your story and artwork and slot it in, and let AGS do the rest. AGS provides everything you need from within one easy-to-use application.
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                                                    8 LikeAmazon Lumberyard
Amazon Lumberyard is a free AAA game engine deeply integrated with AWS and Twitch – with full source.
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                                                    8 LikeRPG Toolkit
The RPG Toolkit is a free, open source project delivering a simple, flexible and powerful tool for the creation of role-playing games on your personal computer. The homepage also hosts games created with rpgtoolkit.
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