Yamagi Quake II is an enhanced client for Quake II.
A new version of the open source VM VirtualBox has been released. VirtualBox is available for different operating systems like Windows, Linux, Solaris and Mac OS.
A new version of the Doom, Heretic and Hexen source port Doomsday Engine has been released. This was half a year ago, but better late then never. ;)
A new version of the popular virtual machine for classic adventures ScummVM has been released a few days ago.
FreeOrion is an open source project that aims to provide a free and platform-independent game in the tradition of the Master of Orion games (released under the GPL) (Changelog).
A new version of OpenRA has been released. OpenRA is free Real Time Strategy game engine supporting early Westwood games like Command & Conquer and Command & Conquer: Red Alert.
A new version of the open source VM VirtualBox has been released. VirtualBox is available for different operating systems like Windows, Linux, Solaris and Mac OS X.
OpenMW is an open-source engine for the game The Elder Scrolls 3: Morrowind.
LGeneral is an open source remake of Panzer General available for Linux and Windows.
PrBoom-plus is a Doom source port based on PrBoom.
Alite is a free (GNU-GPL) remake of the game Elite for Android - Alite in the Google Play Store.
D2X-XL is an OpenGL-port of Descent II. Supported platforms are Linux, Mac OS X and Windows.