Battle Dawn Galaxies is a strategy MMO browser based game featuring a huge galaxy with thousands of other real players. The game is built entirely in Flash. It's free to play and requires no downloads.
You begin as the leader of a small space station and through diplomacy, strategy and skill you'll expand your rule over the entire galaxy.
Establish your station, expand your borders, and build up a great armada. You will outwit and out-maneuver your enemies and forge long lasting friendships with your allies, the ones that won’t betray you of course...
Source: The Game Website.