Though the company that originally developed Halo Wars is no more, the real-time strategy game will still be getting post-release content. Microsoft revealed today that an add-on entitled Strategic Options will hit Xbox Live in the next few weeks:

The add-on adds three new multiplayer modes as well as four new Achievements worth 100 points. Here are the details on each:

Multiplayer Modes

• Keepaway Mode - The “Halo Wars” adaptation of Capture the Flag. Teams will battle it out to capture a free-roaming Forerunner Sentinel to score points before the other team. Capture three sentinels to claim victory.
• Tug of War Mode is all about having a stronger army than the opponent. Defeating enemies is essential, but success is determined by a combination of the army, buildings and resources left standing in the end.
• In Reinforcement Mode, all active battle units are provided in successive waves. Players must adapt their tactics and use the ever-changing set of units to outwit and outlast the enemy.

Achievements

• “One and Done” (30 points): Score the winning point in a game of Keepaway against Legendary A.I.’s
• “Pull Hard, Pull Deep” (20 points): Win and never trail in a Tug of War game
• “Freak on a Streak” (20 points): Gain at least 15 population from a single wave in a Reinforcement game
• “Living Loving Bug” (30 points): Obtain a Scarab during a Reinforcement game

The price and exact release date have not been revealed yet. Robot Entertainment, founded by former members of Halo Wars developer Ensemble Studios, now handles post-release support for the game.