Widelands is an open source (GPLed) real-time strategy game. It is built upon the SDL and other open source libraries and is (and will always be) under heavy development. If you knew Settlers I & II™ (© Bluebyte), then you already have a rough idea what Widelands is all about because widelands is heavily inspired by those two games.
It is a development tool suited to creating a wide range of applications.
With Source Finagler you can open and browse the contents of GCF, VPK files.
Enjoy a real-time strategy game of ancient warfare.
Makes it easier to connect Airfoil to applications.
Simulation game in which you own a real estate agency.