As the game's title would imply, Remnants are a key part of practically every element of the world. What they are exactly however, is difficult to define. Remnants are ancient and powerful relics that vary in size and shape, and can take the form of machines, beasts, as well as weapons. Humans first came into contact with Remnants about 1,000 years ago. People back then made settlements around the Remnants, and to this day the colossal Remnants stand as they were 1,000 years ago.

For Instance, one Remnant, the Valeria Heart, is a sword the size of a small mountain. It is surrounded by the town of Athlum, which was built up around the artifact because of its extraordinary qualities. The Valeria Heart bestows courage upon those around it, and it also is responsible for the plentiful water supply. Like this sword, Remnants can have an array of unique powers - some of which are hidden or unknown.