Obsidian Fleet is an online simming group that runs play-by-email, forums-based and SMS style games. Obsidian Fleet began in 2001, and as of 1 September 2010, boasts 700 characters on 77 sims. The bulk of the Fleet's sims are divided into three "task forces," as well as numerous independent units, including civilian, Klingon and Romulan sims.