Mario

[sdp]

Originally Posted by Andrew NDB

With all the other entries being "Side" games.

Not to Nintendo, they very much consider the New Super Mario Bros games mainline game as well as the other handheld games. They've been inconsistent with some games like Yoshi's Island which is usually not considered part of the Super Mario series anymore, so you'd have to get rid of that one. Super Mario Galaxy 2 is another game Nintendo sometimes doesn't like to acknowledge for whatever reason when doing their retrospectives.

Mario Land 1 & 2 were not usually considered at first but Nintendo does mention them as being mainline for the past 10 years or so.
Hell the latest poster and stuff from the Mario 40 actually excludes Galaxy 2 (despite the game getting remastered) and Yoshi's Island, but does include the game boy games, the New SMB games and even Super Mario Maker.

Spoiler: