Not too shabby......
Well, before I right a full review let me tell you that I have only played through the first two worlds, so if I had beaten it this review could have made the game sound better or worse.
Gameplay: The gameplay is rather simple, good for younger kids, a little boring for others. Basically all you use is the shoulder buttons, one of the four lettered buttons ( I think A), the directional buttons (only left or right and it's optional because you can use the shoulder buttons for it to), and the touch screen (only for a power-up about once a level). And all you do is (as the title states) climb.
Graphics: Let me just tell you that the picture won't look as bad as the Gamespot screens unless you have your eyes 1 centimeter from the DS screens. The picture is very colorful and in looks somewhere in between SNES and N64 (?maybe closer to SNES?). The cut-scenes look pretty good (between N64 and GameCube).
Sound: The sound pretty much sucks: the music is the norm, the cutscenes you have to read, and the in-game effects are sometimes random (like DK laughing when he dies).
Difficulty: I picked Just right because, even though the regular gameplay is sometimes easy, the boss modes (that I have played so far) are kinda hard.
This game is like a word puzzle; you don't play it for pure fun but to challenge yourself and take up some time. It's good to play on a road trip or when you have some free time and you already beat all your other games. And even though I said it was boring, it is, for some reason, addicting and keeps you coming back.
I suggest it to anyone who just wants something to play on their DS.