Really fun and challenging! You need two people to beat this game. The puzzles are quite challenging but not frustrating. A good challenge with some good replay value to it to see the other endings.
I was really big on this game when I played it back in the day. Actually, when I got my Wii for Christmas in 2006, this was the big "I WANT IT" game for me. It's probably a bit awkward now, but as a kid, it was the best.