Skylords
SkyLords is a real-time, browser based, online, multiplayer strategy game (MMOG), which includes many impressive features such as diplomacy, trading, piracy, espionage, space battles, custom spaceship model designing, round bonuses and clan warfare. Despite all these features, this game is very easy to start because of the short training mission all new players have to pass.
Join the SkyLords community and fight battles in real time, find planets and colonize them or take them by force. One of the best things about SkyLords is that you can play this game for free.
No plug-ins or other downloads are necessary to play. Online multiplayer games support thousands of people playing together at the same time.