What makes this game stand out most is the outstanding soundtrack, narration, and engaging story. The gameplay is fantastic as well. There's a lot of replay value, with an alternate ending and various game modes. Expect 6-8 hours per playthrough if you're being fairly thorough. This is a definite must-have.

11/10.

EDIT: Supergiant has hit it out of the park with every release. This game is still, easily, well worth every penny, even 10+ years later.