The Fallout Series is one of Interplay's best known series. Interplay, currently, does not own the series and only has the rights to Fallout Online. Interplay first released Fallout, a game that was developed by the Black Isle Studios team while they were part of Interplay. Fallout 2 was released by Black Isle Studios and was the last Fallout game to do so. Fallout Tactics: Brotherhood of Steel was released by 14 Degrees East and Fallout: Brotherhood of Steel was also developed internally by Interplay themselves. Interplay then sold the main Fallout license to ZeniMax, however, they retained the right to make a Fallout MMO. Currently Masthead Studios is developing Fallout Online with assistance from publisher Interplay.