File with a .RDS extension contains a 3D image of scene – objects and their properties – textures, shadowing, lights and animation settings and their effects. These files were used by the Ray Dream drawing and animation software of the 1990s.

Software utilising RDS files was created by the MetaCreations, a company acquired by Eovia and later by DAZ Productions. Currently there is still a possibility to import or open RDS files within some applications of its author, for instance DAZ 3D Studio, with the Open or Import option.