From publisher blurb:
Event Horizon is a 60-page first-level adventure for Barrel Rider Games’ White Star: White Box Science Fiction Roleplaying.
This adventure takes place in a hard science/space horror genre and, as such, the adventure assumes that the players are playing human characters who would fit into this style of setting. While a low-level adventure, Event Horizon is not an easy adventure and is designed to be difficult. Death is probable, insanity even more so.
The players face a wide variety of problems in this adventure, ranging from the mundane—typical combat encounters, repairing the ship, etc.—to dealing with the insanity-causing rifts in time and space, and confronting old personal horrors and memories. Due to the limits placed on the players, and in keeping the adventure human- and hard horror/science-centric, a few new options have been added to the available rules and are strongly, but optionally, encouraged.