I spent most of last evening on these 2. I was surprised how good Ninja Gaiden II is. It's not generally my kind of game. It's beautiful and very responsive. They nailed the atmosphere, reminding me very much of the Genesis/MD classic Revenge of Shinobi. You get all kinds of weapons, powers and moves. As usual anymore, I'm hanging by the skin of my teeth in such fast and furious contests. At least on the lower difficulty, I could hold my own. I liked this a lot more than the DMC 4 demo. It didn't seem like I was just mashing buttons and hoping to do enough damage to survive. I could block, attack at 2 strengths, do combos, and magic attacks. I felt I was in control most of the time.
Civilization Revolution also got a loving treatment in graphics and presentation. While production, research, and so forth are simplified from what I remember of similar PC games, there is plenty of depth and variety left. Each turn spans 50 years, which I thought was too much. I'm hoping that's just a demo limitation. There is also a number-of-turns limit, but you can play for hours even so. The whole thing is a lot less intimidating than the last PC Civ game I tried. The whimsical "advisors" talking gibberish, nicely modeled and textured though they may be, I could take or leave.