A free & open-source 2D sprite editor, made with the Godot Engine
Modern, lightweight and efficient 2D level editor
photo3D_chung seashore3D_chung galaxy_chung dive3D_chung
Simple animation of a journey at light speed
XNA based game engine completely written in c#
3D game engine for C and C++
KPEdit - A 2D skeletal animation editor.
Game engine supporting many 3D/2D formats and graphic effects
Runtime graphic engine (use OpenGL) for ObjectPascal