ENIGMA Development Environment vs GameGuru

Almost full support for GML,
The ability to create and access C++ types, templates, and functions, compile DLLs and other C/C++ scripts

Support for Windows, Mac and Linux.

Enigma can support over 90% of gamemaker's GML language

besides the powerful combination between GML and C++, beginners can also use drag and dropping.

Written in C++, many features have been demonstrated running much faster than interpreted equivalents in GameMaker (up to 10-20 times faster than GM 8.1).

Changes are made daily to add new functions/fixing bugs.

A full stack trace with available cores and memory information as well as operating system and Java version including file names and number is generated whenever an exception is encountered, with a handy link to submit the issue to GitHub.

Simplicity and accessibility are the core design goals of FPS Creator Reloaded.

Users share ideas, help, and advice through the official forums. The community also provides a wealth of free assets, and the GameGuru Assets Store sees constant additions.

News and improvements are released on a monthly schedule. Interaction between The Game Creators and project backers is excellent.

Easily import your own 3D models with the built-in importer and create custom characters with the Character creator. Custom weapons are much more difficult, though.

The gamer creator forums have a large number of users, developing games, making models for sale and to give away for other users. They answer questions, help each other with problems in their games, and can make using this software so much more fun and easy.

Games you publish with GameGuru can be sold without any restrictions or commissions.

An easy 3D editor to create your own maps in seconds with drag-and-drop function.

Awesome friendly GUI, and quite easy to use.

Currently in development but already looking very good! Easily create big and customized buildings with default building blocks and share them with others.

Also very easy to use in the designer: The buildings are treated like entities but still directly available in the 'building editor mode'.

Uses Lua.

A store where you can buy various assets for your games like sounds, 3D models, weapons... Very good prices and a lot of assets are even free.

The Game Creators team frequent the forums and ask the community for feeback and suggestions both there and via an open poll on the website. They have a great history of reading suggestions, viewing screenshots, and generally working with the community.

The game engine is optimized for efficient use of memory.