Gideros Release version
3D game engine/framework in C, with Luajit and Python bindings now
FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
A modern, cross-platform Quake game engine based on FitzQuake.
Open and edit the archive files used in over 4200 games.
Odamex is a free, cross-platform, modern client-server Doom engine
A cross-platform port of Hexen II game.
GemRB is a portable open-source implementation of the Infinity Engine
Hardcore 3D space shooter with spaceship upgrade possibilities.
Air traffic control tower and radar simulator (solo + multi-player)
WW2 U-boat simulation
Zoomable user interface (ZUI) with file manager, file viewers and more
X3D is the open-standard format for 3D graphics scenes on the Web.
Game engine supporting many 3D/2D formats and graphic effects
Game library for Pascal