WELL... in my opinion, Resident Evil: Code Veronica X is probably the second best Resident Evil game there is (don't know about 3 or 5, haven't played them. Then again, nobody has played 5 yet. ;) )
Controls are the same as it was in 1, 2, and probably 3 as well... tank-like movement. I always hated this, but there isn't a whole lot I can do about it. Anyway, it's pretty much the same basics as the previous Resident Evils, except graphics are superior to its predecessors, it's longer, and doesn't have stupid dialogue that 1 and 2 had.
This game is pretty hard. Zombies can be faster, there are, of course, new enemies that nobody would have ever seen in the previous ones, and healing items don't seem to show up when you need them. The knife can actually be pretty useful in this game, depending on how you use it... it's perfect for knocking zombies back down the stairs or cutting zombies to bits while they are on the ground. Plus the knife is about all you need for the Cerberuses (if you don't believe me, just shoot one with the handgun and knife it while it's down or smack it when it jumps you.) There is a greater variation of zombies in this one instead of having three or four different appearances for them, there are now quite a bit. Puzzles are pretty much the same and aren't too hard to figure out. The music, in my opinion, is the best and is definitely superior to all of the other Resident Evil games.
The story is great. It has a habit of pulling surprises out of nowhere and then you're like "Well... I didn't expect that to happen..." Especially when you see Wesker once again, since he was thought to be dead in 1... but he's back and he is a nightmare to be reckoned with. His goal is to kill Chris Redfield and in the middle of the game when you do have to play with Chris, you will see Wesker quite a bit.
Words fail me while trying to describe it. This is an awesome game!