United Force of Osiris (pre Alpha)

Defend Battle Station Osiris from the Galactic Invaders.
This is a fast-paced game for competitive players that like to blow up stuff. Settle the issue with the enemy force once and for all and save this star-system from corruption. Play as a single-player for an immersive AI-experience or multi-player against your friends for a last man standing competition.
Features:

• Single player with fun AI enemies
  
• or multi-player for a “king of the hill” competition.
  
• Different type of space ships to choose from, depending on your pilot style.
• A unique comic style.
  
• A free dedicated server for you and your friends to play on.

http://spacegaming.eu/