Paper Mario: The Thousand-Year Door is equivalent to Mario & Luigi: Superstar Saga, why? Because there similar, and Paper Mario: The Thousand-Year Door remake is equivalent to Mario & Luigi: Superstar Saga + Bowser’s Minions. Super Paper Mario is equivalent to Mario & Luigi: Partners in Time, why? Because there both dark. Paper Mario: Sticker Star is equivalent to Mario & Luigi: Bowser's Inside Story, why? Because they both get new designs. Paper Mario: Color Splash is equivalent to Mario & Luigi: Dream Team, why? Because they both have final boss as Bowser. Paper Mario: The Origami King is equivalent to Mario & Luigi: Paper Jam, why? Because Paper appears in Mario and Luigi game, and Origami appears in Paper Mario game.
Bonus: The first Paper Mario game will be equivalent to Super Mario RPG.