A game engine to create games...
Spring is an opensource 3D RTS engine with many games and highly customizable content.
14 Feb 2016)
A framework for making 2D games in the Lua programming language.
Polycode is a C++ and Lua framework for building interactive applications.
Included in Blender is a complete game engine, allowing you to create a fully featured 3d game right inside Blender.
A complete 3D game development suite written purely in Java.
OpenRTS is a 3D real-time strategy game engine.
Crystal Space is a mature, full-featured Software Development Kit (SDK) providing real-time 3D graphics for applications such as games...
Neothyne is an attempt at getting back to the roots of good old twitch shooting akin to that of Quake World.
The Cafu Engine is an all-purpose, modern 3D graphics engine and game development kit, feature complete to get you started quickly.
Platinum Arts Sandbox Free 3D Game Maker is an open source easy to use standalone 3D Game Maker and 3D Game Design program currently...
Ren'Py is a visual novel engine – used by hundreds of creators from around the world – that helps you use words, images, and sounds...
Mutiny is a free, open-source 3D engine and toolkit with a specific focus on cross platform support and development (see supported platforms).