Night's Dark Terror is a wilderness scenario in which the player characters travel on a river and through the mountains, going from the Grand Duchy of Karameikos into the more chaotic lands.

[1] The PCs explore more than 20,000 square miles (52,000 km2) of wilderness, with eighteen locations, including multiple smaller dungeons, a riverside village, and a frontier town.

[1] B10 Night's Dark Terror was published by TSR in 1985 as a 64-page booklet, a map, and a cardstock counter sheet, with two outer folders.

[3] Rolston called Night's Dark Terror "the best-illustrated and best-designed module I've ever seen—and the adventure and campaign material is every bit as remarkable as the graphic presentation.

"[3] In his 1991 book Heroic Worlds, Lawrence Schick describes the adventure as an "Outstanding wilderness scenario... that 'bridges the gap' between the D&D Basic and Expert rules.