XIII has been entertaining so far. The cell shading does look decent, and the comic style effects like the "sixth sense" fit in well.

Not sure I understand the 3D comment though. Everything in the game is in 3D, including the characters. The game engine is a modified version of the Unreal engine, and has a cell shaded piece added in. The backgroulds, while being a bit more 3D looking then characters, do still convey the cell shading decently.

Gameplay wise, I have enjoyed it thus far, and am about 3 hours into it now. I want to try out the multiplayer to see how it fairs.