From Starfleet Commander
Blue Frog Gaming release a new universes approximately every 6 months. You may have an account in each universe.
Universes are listed below in the order that they were released.
Universe one (Uni1, also known as Original or SFCO) was the first universe created. It entered beta in August 2009, had its last reset September 4, and by December 2009 had gained 70,000 daily users. See More
Extreme (SFCX, or just X) was the second universe, released January 2010. Everything with the exception of missions runs twice as fast, and diplomacy mode is unavailable. See More
Universe 2 (U2) was the third universe released, in August 2010. It has new mine formulas that doubled the mine output. See More
Extreme 2 (X2) was the fourth universe released, in December 2010. It features not only double the speed but also the new mine formulas. See More
Starfleet Commander Nova (Nova) was released March 22, 2012. It has a number of changes to the mechanics of the game and introduced a number of new ships. See More
Starfleet Commander Conquest was released April 16, 2013. It introduced contestable territories. See More
Starfleet Hired Guns was released December 5, 2013. See More
BFG periodically opens the SFC Tournament for time-limited seasons. The first Season began July 9, 2012. Tournaments are intended to appeal to SFC expert players, but often contain unique game mechanics. They are usually the fastest-paced universes. See More
Stardrift Empires (SDE) and SDE Nova are BFG SFC-type games that BFG started in cooperation with SyFy Games. SDE Original opened August 10, 2011; SDE Nova opened October 1, 2012. SDE introduced a number of new features that were later added to SFC universes. It also has much more sophisticated artwork. More information is available on the Stardrift Empires Wiki.
Mafia Boss was a Mafia-themed SFC-style game that ran from June 2010 to 2012.