Another vote for Ninja Gaiden (XBox), Ninja Gaiden Black, Ninja Gaiden 2, etc.
Many games up the difficulty by making enemies have 10x or 100x the hitpoints, or making you correspondingly more fragile, or making the enemies do goofy things like snipe you in the left eye with a rusty pistol from 900 yards away, etc.
NG and its brothers simply outclassed you. Yeah, they did a bit more damage and you did a bit less, but holy bajeezus they were aggressive and SMART - very few games actually change the enemy AI based on the difficulty level, but these do. Lower your guard for a split second in a vulnerable area of a room on Normal - you'll probably get away with it. On Master Ninja - get ready to get juggled. Watch how they circle you, watch what attacks they use, watch how one will force you towards another - all that changes based on the level of difficulty. They aren't 5x faster or have 10x the hitpoints, but they still kill you with the speed of thought.
I don't see much skill in someone beating Ultimate Final Omega Boss #934583 in the latest Final Fantasy game (difficult because it has 10,000,000 hitpoints and regenerates, which IMHO makes it a test of endurance instead of skill), but I see a lot of skill in someone entering a room in NG 2 and taking on a half dozen Black Spider Clan ninjas and, in a FURIOUS burst of activity (almost too fast to follow) that lasts no more than 10 seconds, leaves all their opponents dead.
Many games up the difficulty by making enemies have 10x or 100x the hitpoints, or making you correspondingly more fragile, or making the enemies do goofy things like snipe you in the left eye with a rusty pistol from 900 yards away, etc.
NG and its brothers simply outclassed you. Yeah, they did a bit more damage and you did a bit less, but holy bajeezus they were aggressive and SMART - very few games actually change the enemy AI based on the difficulty level, but these do. Lower your guard for a split second in a vulnerable area of a room on Normal - you'll probably get away with it. On Master Ninja - get ready to get juggled. Watch how they circle you, watch what attacks they use, watch how one will force you towards another - all that changes based on the level of difficulty. They aren't 5x faster or have 10x the hitpoints, but they still kill you with the speed of thought.
I don't see much skill in someone beating Ultimate Final Omega Boss #934583 in the latest Final Fantasy game (difficult because it has 10,000,000 hitpoints and regenerates, which IMHO makes it a test of endurance instead of skill), but I see a lot of skill in someone entering a room in NG 2 and taking on a half dozen Black Spider Clan ninjas and, in a FURIOUS burst of activity (almost too fast to follow) that lasts no more than 10 seconds, leaves all their opponents dead.