Oaths of Riddermark  contains six ready-to-play adventures set after the year 2955, and taking place in the lands of Rohan. The scenarios can be played separately, or as chapters of an epic campaign spanning a number of years.

This volume complements the rules and background material contained in  Horse-lords of Rohan, the supplement for  The One Ring Roleplaying Game  dedicated to the Mark of the Riders, as presented by J.R.R. Tolkien in  The Lord of the Rings €ž.