Definitely the most mechanically dense game in the Mario & Luigi series. Unlike Superstar Saga and Bowser's Inside Story, where you at most control 2 characters at once, you control 4 characters at once in this game. This especially makes for creative mini-games in the form of the Bros. Items, where you have to press the buttons for 4 characters instead of two, and in the fact that you can deal more damage by combining attacks with the younger version of that brother's attack. The story is pretty good, although it does feel very constructed at some points. My biggest gripe with the game is that it is just too damn long. In the beginning, I had a hard time motivating myself to continue, and it took a while before the game really got its speed up. I would consider this to be a pretty good game though, and the soundtrack is what elevates it to that level. We have great tunes like "Thwomp Volcano" and the final battle theme. Overall a solid game, but probably the weakest in the M&L series.