From the introduction: Blood Floats in Space is a new setting for the Mothership RPG that details the Empire Without Borders or Competition, a massive, slowly splintering confederation ruled by the Sovereign, a ruthless dictator who has shed her physical form in favor of existing as a mind fully detached from material distractions. Two new Mothership classes are available for characters hailing from the Empire: the juggernaut and the psychic. The juggernaut is an abomination - a flawed melding of flesh and steel - and the psychic is a product of a brilliant mind being opened up to incredible, otherworldly powers.