Great game!
Well, its pretty simple. You have your basic attack button, magics, defend, transform, and suck souls. You can enhance your weapons and your oni gauntlet, and your armor. This sounds simple and boring, but trust me, its fun as hell. With many puzzles, box puzzles, ( puzzles in chests) and a good amount of enemies, its fun as hell. Think of it as Zelda, but less of the puzzles and more of the hacking enemies. And near the end of the game, you warp between Samanosuke and Jaques to change the events of the area, which adds some cool puzzle figuring. And gone is the D-Pad, now with the analog stick. This makes it much better, though the D-Pad was still prtty good, don't let the D-Pad stop you from buying Oni 1 and 2 takes a while to get used to it, but they're cool. There is also the Dark Realm in which I think is retarted because you have to go through 30 levels of hard enemies WITHOUT exiting, which sucks. Though, thats the only flaw ( well that, and the fact that its only 15 hours long.)
Graphics: 9/10
Detailed areas, great animation, smooth motion of the characters, what more can you ask for? Well, there is the ABSOLUTELY AWESOME intro CG, but thats it, its the only CG, but there are CG's using the in-game engine, but its alittle pre-rendered, I don't know why they didn't use CG instead. Shame on you Capcom.
Story: 8/10
I don't want to explain it because its too long, but the whole time traveling thing is pretty cheesy, but the interesting characters make it great, and there are a couple of plot twists, but not many. Pretty good.
Sound: 10/10
Great opera, great orchestrated OST's, and pretty damn good voice acting.
Overall, you should get this game or I will kill you, just kidding, lol. But please get it.