Fantastic fun game with atmospheric graphics, imaginative courses and GOOD music. I have bought a lot of classic Nintendo games for my Wii and some have worked pretty well to play with my girlfriend, but this is the first game that is so fun and challenging that it is often the girl who takes the initiative to play! It may be seen as a good rating. :)
The game is nice in that you can record two at the same time, but if one person comes out of the picture so you can just wait a few seconds as he jumps automatically to where the other player is. Moreover, Game Over just that you get to start from scratch on the latest track. You do not have to worry about saving process somehow without it is handled automatically.
Another nice detail for 2-player mode is that the player two (Diddy Kong) at any time can jump up on Player One's (Donkey Kong) back and thus free ride. It also gives Donkey Kong expanded skills.
The paths and worlds feels really thoughtful and unique. Unlike Super Mario Bros., where it is usually rapid transition from nice courses with clear blue skies and sweet monster of a dark cave courses and castles with lava and nasty traps, it feels worlds in Donkey Kong Returns, as they constantly keep the same friendly atmosphere, despite that the challenge of course increases as advancement. Or, to put it another way, my girlfriend (who clearly prefer the gentler paths with clear blue sky in Super Mario) are at home in all types of courses, not just those in World 1 and 2.
The negative I can find it sometimes is a little too difficult, despite nice Game Over. It happens quite often that I get to drive on a track about 20 times and have time to swear and shout some of which "crap game" it is! But at the same time it makes the game for long. And there's a feature where you can skip a track after trying in vain a number of times, so Nintendo has thought of this frustration too. However, it's not a very satisfying feeling to skip a track ...
Another thing is that you should collect both puzzle pieces and KONG letters in addition to just finish the track. So far we have not managed to collect all the pieces and letters on one runway and we are already on the World 6! But it certainly says more about us than it does about the game. :)
One last negative thing is the control; regular movements that hope and spring feels normal and intuitive, but do not understand the thing with holding down and shake to blow on something. It feels contrived and is not easy to perform.
Anyway, this is a very highly recommended purchase!