I thought sunshine was decent, but I'll admit that the only thing that I found great in it was the extreme vertical scale of some of the levels. the harbor level triggered my fear of heights, and I liked climbing the seashells in that one level.
for galaxy, at first I was a little bored with it, but then I played galaxy 2 which drew me in a lot more. after that, I liked the first one. weird, but maybe you should try the second when you can get it cheap.
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mreow!
spork for president - metroid composite