Linux Game Development

Godot Engine is a feature-packed, cross-platform game engine to create 2D and 3D games from a unified interface. It provides a comprehensive set of common tools, so that users can focus on making games without having to reinvent the wheel. Games can be exported with one click to a number of platforms, including the major desktop platforms (Linux, macOS, Windows), mobile platforms (Android, iOS), as well as Web-based platforms (HTML5) and consoles.

FEATURES

Visual editor, full of mature tools.
Uncluttered UI, with context-sensitive editors.
Amazing scene system, supporting instancing and inheritance.
Friendly content creation interfaces for artists, level designers, animators, …
Visual shader editing for 2D and 3D.
Persistent live editing (changes are not lost after stopping the game). Live editing on mobile devices!

Inkscape is a professional vector graphics editor for Linux, Windows and macOS. It's free and open source.

Krita is a professional Free and open source (FOSS) painting program. It is made by artists that want to see affordable art tools for everyone withith concept art, texture and matte painters, illustrations and comics.

Blender is the free and open-source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing, video editing, and motion tracking.