One of the greatest 2D games of all time, hands-down. The background vistas and the sense of tragic, lost grandeur they give are magnificent; I've never seen such evocative backgrounds in my life. The game-play and mechanics are impeccable, varied and strike the balance between challenge and fun to perfection. And my god, the soundtrack and what it does to you when it's attached to these environments is beyond description. Good luck finding music anything like this in another 2D game in your life. Almost no platformers in history have reached this level of artistry.