#19: Super Mario Galaxy 2
An absolute masterpiece. I think this is the only absolutely perfect game I have ever played. I replayed it recently and I failed to find anything faulty at any point. Genius, topnotch level design that is almost on another level in quality even to most other Super Mario games. The orchestral soundtrack is phenomenal with the credits theme in particular being a highlight and imo the best theme of both Galaxy games.
The game is beautiful, full of vibrant colors, filled with creative, brilliant ideas. Simply masterful.
Super Mario Galaxy 2 is the third 3D Mario game and the fifth Super Mario game in general on my list so far.