Super Mario Galaxy 2 is BY FAR the best Mario/Nintendo/Any game ever made that I have played in my opinion. The only game that even comes close is Super Mario Galaxy 1. The game has soundtracks even better than the first game, the graphics are amazing for a wii game, and you can even ride Yoshi! (He also can use power ups in this game. The level designs are wonderful, and I believe Nintendo topped out on that game. As someone who has 100% it, I believe I have the credit to say that. This game is awesome, beating Super Mario Odyssey by a long shot. The low gravity levels and amazing boss fights combined with the cool plot all play into making this one of, if not THE best video-game EVER. (You can unlock Luigi after beating the final Bowser fight). It also introduces new power ups like cloud Mario, boulder Mario, and the blimpfruit for Yoshi.
ALL IN ALL, this is the best video-game I have EVER played.
Review of Super Mario Galaxy 2
