Welcome to Unvanquished
Unvanquished is a free, open-source first-person shooter combining real-time strategy elements with a futuristic, sci-fi setting. It is available for Windows, Linux, and Mac OS X.

Features:

Two teams.
-Play as either the technologically advanced humans or the highly adaptable aliens, with a fresh gameplay experience on both sides.

Build a base.
-Construct and maintain your base with a variety of useful structures, or group up with teammates to take on the other team.

Level up.
-Earn rewards for victories against the other team, whether it's a deadly new weapon or access to a whole new alien form.

Customize.
-Compatibility with Quake 3 file formats and modification tools allows for extensive customization of the game and its setting.