The One Ring is a role-playing game based on The Lord of the Rings books and published by Sophisticated Games. The map that features in this jigsaw was created by Italian artist Francesco Mattioli and was contained in the latest edition of the game that was launched on a record breaking Kickstarter offer in 2021.

Eriador was the large region in the north-west of Middle-earth, defined between Lindon and the Blue Mountains to the west and Rhovanion and the Misty Mountains to the east.