Hard to describe
Game play : When i heard that super Mario galaxy came out on the wii i was happy because i tough it was going to be like the GBA clasic games but when i played it i was impressed because you can travel in different galaxies to get the stars but when i was half way done the game i was kinda disappointed because the game repeats itself there`s not allot of things to do because your`e like stuck in the observatory. But Then i decided to go for the 120 stars to get the extra cut scene plus unlocks and I think the game is even better because you can see the new cool looking galaxies that you would've missed. I got the Luigi option you can play as Luigi and I got the extra cut scene after the credits. The game play is fun and long all the stars that you have to get are most likely easy except the comets that are extremely hard and need good precision like daredevil comet speedy comet and the most annoying purple comet. In these comets you have to get a star by doing a challenge like collecting purple coins around the map or just race Mario to the star at the other end of the map. These challenges can be annoying because you can find yourself losing about 20 life's or struggling to get stars and that can get you pissed i spend more than an hour on one challenge and i lost 50 life's yes that seems like noobish but its the truth if you want to beat the game to 120 stars good luck because the challenges get harder.
Graphics : The graphics are simply great for the Wii probably the best in details and bright nice colors all the galaxies have an individual color or special effect.
Sound : The music is really great there are different sounds in every galaxy in every new place you enter.
Value : I think that paying 45 $ is worth it because you have so much game play to play through its really worth it in playing the hole game in 120 stars.
If you get fifty stars don't think that you`ve beaten the whole game in total to beat the game completely you need 120 stars.
I recommend this game for Zelda fans and Mario fans also.