Discovery mod is a full-scale expansion pack for Freelancer focused on continuing the story started in the vanilla campaign. The mod is used by some of the busiest multiplayer Freelancer servers and has multiplayer features including player owned (and built) bases, jumpdrives, cloaking devices and equipment manufacturing.
This picture shows a Ranseur Dreadnought prowling the edge systems claimed by the Outcast Dons, after checking in on Freeport 10. When one of these hulking behemoths runs a sweep of Tau 37, the tension aboard Falkland is palpable. Screen provided courtesy of SeaFalcon.