- “Luigi, I found this cap in front of the castle a little while ago. You must have dropped it. If you want to become a full-fledged hero like your brother, you can't be so careless!”
- —Toad, Super Mario 64 DS
Super Mario series
Super Mario Bros. / Super Mario Bros.: The Lost Levels
Super Mario Bros. 2
In Super Mario Bros. 2, the tip of the cap had been changed to black instead of its usual green. This happened for the Mario Cap as well. However, after this game, the Luigi Cap reverted to having a green tip.
Super Mario 64 DS
In Super Mario 64 DS, Luigi's cap is used to shape-shift into Luigi if the player is either Mario, Wario, or Yoshi. In the same game, Luigi is affected in the same way as Mario and Wario if his cap is lost. Luigi's defense and attack sharply decline while his cap is absent from his head. If the player gets the cap back, Luigi's attack and defense revert to normal. Until Luigi is unlocked, it appears only in Big Boo's Haunt, during any mission except the first one. If the player obtains a Power Flower while wearing the cap, they turn into Vanish Luigi. If he loses his cap and gains a Power Star from another level, Luigi can simply talk to a Toad (who will have found and be wearing Luigi's cap) in the Mushroom Castle's lobby and get it back from him.
Super Mario 3D Land / Super Mario 3D World / Super Mario 3D World + Bowser's Fury
In Super Mario 3D Land and Super Mario 3D World, Luigi, like his brother, loses his cap in his Small form. However, in the former game, once the player has 1,110 lives, his regular form loses his cap instead.
Super Mario Odyssey
The Luigi Cap can be obtained for Mario to wear in Super Mario Odyssey. It can be either purchased from a Crazy Cap store or obtained through scanning a Luigi amiibo (the latter also unlocks Luigi's costume).
Mario Kart series
Mario Kart 64
Mario Kart Wii
Mario Kart 7
Mario Kart Tour
A glider based on Luigi's cap, aptly named Luigi's Hat Balloon, debuted in Mario Kart Tour on the 2022 Mario vs. Luigi Tour. N64 Luigi Raceway also returns in the aforementioned tour, which also marks the return of the giant Luigi Cap atop the grandstand of that course.
Mario & Luigi series
In Mario & Luigi: Superstar Saga, Mario & Luigi: Partners in Time, and Mario & Luigi: Bowser's Inside Story, the L on the Luigi Cap is black. The Mario Cap was changed in the same way. From Mario & Luigi: Dream Team onward, they are the usual green and red.
Dance Dance Revolution: Mario Mix
Super Smash Bros. series
Super Paper Mario
Mario Sports Superstars
Mario + Rabbids series
A replica of the Luigi Cap, the Green Hat, is an item in Nintendogs that the player's dog can wear.
In Animal Crossing: City Folk, and later New Leaf, there is a headgear item resembling the Luigi Cap that the player's avatar can wear. The item is called "li'l bro's hat," in reference to Luigi being the younger brother of Mario.
Icon of Luigi's cap from Super Mario 64 DS
The Luigi Cap Mii outfit from Super Mario Maker 2
The Luigi Cap in Paper Mario: The Origami King
The Luigi's Hat Balloon glider from Mario Kart Tour
Names in other languages
Ruīji no Bōshi
Lùyìjí de Màozi
|French||Casquette de Luigi||Luigi Cap|
|German||Luigis Mütze||Luigi's Cap|
|Italian||Cappello di Luigi||Luigi's Cap|
|Spanish||Gorra de Luigi||Luigi's Cap|
- On the North American and European box art for Mario Kart: Double Dash!!, the L on the Luigi Cap is backwards.