Super Mario 1024

The shame Super Mario 1024 starts with Mario walking down the street with Luigi when Luigi gets kidnapped by Waluigi. Now Mario has to go defeat Waluigi. He has to go through 10 worlds before he can go battle Waluigi.

World 1: Mushroom Kingdom
Mario has to defeat all the "Waluigi bots", "Girly Waluigis" and "Waluigi clones", while avoiding all the dresses and skirts. Everything/body everywhere, except for the lumas and Rosalina was evacuated to Sarasaland for further protection, so there is no powerups except for the star, rainbow star, and red star. Waluigi takes his time to gather all his allies, like Mr. L, the Shadow Queen, and Kamek. The boss here is Kamek, who, after defeated, goes down to the Dark Land dungeon.

World 2: Rogueport
Same thing, except this time it is in Rogueport. the boss here is the Shadow Queen. After defeating her, she slowly melted away.