Current developers:
*Jyrki Vesterinen

Former developers:
*Reino Nikki
*Sami Kurvinen

Project Invincible also uses code written by the following people:
*Tim Jones ( http://www.sdltutorials.com/ )
*some contributors of GPWiki ( http://content.gpwiki.org/index.php/SDL:Tutorials:Using_SDL_with_OpenGL#How_To_Load_an_OpenGL_Texture_from_an_SDL_Surface )
*~john ( http://www.cs.csustan.edu/~john/Classes/General_Info/dynamic_C++_Array_Help.html )
*NJM ( http://en.wikipedia.org/w/index.php?title=Spinlock&diff=22818015&oldid=20639093 )
*Cubbi ( http://en.cppreference.com/mwiki/index.php?title=cpp/atomic/atomic_flag&action=edit&oldid=10627 )

The 3D models are from the pouetChess project: http://pouetchess.sourceforge.net/

The icon has been drawn by John T. Haller ( http://johnhaller.com ) and is based on the knight icon of the Oxygen icon theme ( http://www.oxygen-icons.org/ )

The font used in the UI is Liberation Sans: https://fedorahosted.org/liberation-fonts/

Finally, Project Invincible uses the following libraries:
*OpenGL ( http://www.opengl.org/ )
*GLU (OpenGL Utility Library)
*SDL (Simple DirectMedia Layer) ( http://www.libsdl.org/ )
*SDL_image ( http://www.libsdl.org/projects/SDL_image/ )
*SDL_ttf ( http://www.libsdl.org/projects/SDL_ttf/ )
*Assimp (Open Asset Import Library) ( http://assimp.sourceforge.net/index.html )
*Agar ( http://libagar.org/index.html.en )