HL2: Empires Mod v.2.2 Full

Empires is a revolutionary mod for Half-Life 2. It combines the genres of first-person shooter and real-time strategy. Each team has four classes to choose from (scout, rifleman, grenadier, and engineer) with unique weapons and skills each. One player will become the commander by entering the team's command vehicle to build the team's base and lead his team to victory or failure.

UPDATE: A patch to version 2.21 has been released, you can download it here.

Empires 2.2 Changes:

-Empires has been moved over to the Orange Box engine. This includes all new features (motion blur, chat history) associated with the Orange Box.
-Maps: on emp_escort, the wall blocking the last flag will no longer respawn
-Added: engineers can remotely recycle their turrets and cameras via the engineer kit right-click menu
-Fixed: commander camera could get stuck outside of the level when clicking on the minimap
-Fixed: a vehicle that had died from being underwater or abandoned for too long could still be entered
-Fixed: CV could be killed by any weapon when in sudden death
-Modified: when players get in a vehicle, interpolation is turned off to attempt to fix the issue where players are not seated in the correct vehicle position
-Modified: NF RPG was incorrectly set to do less damage than the BE RPG