If you want an audiovisual experience with a good story dream:scape is definitely recommended. As a game it lacks challenge, action and precise controls. It is better to view it as an interactive novel with slight puzzle elements than a game.
You could get away with this kind of guff in 1994 when we were all thrilled just to have justification for the £180 we'd shelled out for a CD-ROM add-on. Walking around a 3D tech demo was interactive! And immersive!