Conjoiner drives were starship engines built by the Conjoiners that used quantum mechanics to propel starships up to relativistic speeds, giving such ships the name "lighthuggers". Conjoiner drives contained a small wormhole linked to the very deep past, through which they draw their propulsion energies from the Quark-gluon plasma created by the Big Bang. The drives had six manual control dials that allowed the power of the engines to be varied. Lighthuggers mounted a pair of Conjoiner drives, both of which were controlled by a disembodied Conjoiner brain that performed rapid calculations to control the internal drive reactions. It should be noted that the Conjoiners did not actually invent the drive themselves, but received the instructions for it via the Exordium Project.