I tried to play Shinobi again the other day, but some of the level design is just...bad. I second the vote for Demon's Crest. And the most underrated game I've ever played is...Metal Gear Solid for Game Boy Color. Well, as far as reviews go, it's actually one of the highest rated games of all-time, with an average score of 95.9%. So, why has nobody ever heard of this game? Why is it never on any top 100 lists? Perhaps people just expected a cheap cash in or an attempt at an 8 bit port of the PSone game (due to the identical name), but it is neither! It is an all new chapter in the MGS series (albeit a sidestory) and the most impressive and complete portable game I have ever played. A lengthy campaign with an intriguing story, over 150 VR missions, three alternate missions for each of the 13 'stages', an excellent soundtrack, and even multiplayer! It is lightyears beyond anything else that was available on the GBC and still well beyond almost any portable title out there today. Hell, I think it's better than any of the console MGS games.