Act of War: High Treason is an expansion pack to an action RTS game Act of War: Direct Action developed by Eugen Systems. It’s a game with intense well-balanced fast-paced gameplay, and a really realistic take on modern warfare! The events of the expansion take place three years after the events in the original game. Act of War: High Treason features: • The three main factions have received additional units. • The multiplayer was expanded with two new modes; Marine One Down and Scud Launcher. • Naval Combat! • Massive new single-player campaign! • Expanded tech trees! • Various balance changes and more!

Act of War: High Treason (abbreviated as AOW:HT) is an expansion pack for Act of War: Direct Action. It was developed by Eugen Systems and published by Atari. It was released in Europe on March 24, 2006 and in North America on May 30, 2006. ...   more on Wikipedia

Plannetary Annihilation: TITANS is a real-time strategy game developed by Planetary Annihilation. TITANS is a stand-alone expansion that adds a bunch of new features to the original RTS game Planetary Annihilation. One of the more massive additions to the game is the 5 explosive mech units, holding the same name as the expansion, TITANS. Along with the TITANS, 16 more units will come into play, prepare to command Hover Tanks, Orbital Battleships and nanobot swarms! Expand your warfare unto new planets with multi-level terrain, available in single and multiplayer modes alike! And also replay mode! View the latest in-match recordings, top moments, or most cruel mistakes. Analyze your mistakes and try again!

Planetary Annihilation is a real-time strategy computer game developed by Uber Entertainment, whose staff include several industry veterans who worked on Total Annihilation and Supreme Commander. ...   more on Wikipedia