The Fire Flower power-up grants Mario the ability to throw fireballs, allowing him to defeat enemies from a distance as well as defeat enemies he otherwise cannot defeat as Super Mario or Small Mario. The fireballs follow a downward trajectory and bounce along the ground until they hit something or disappear off the screen. Only two fireballs may exist on screen at one time, so the player must wait for previous ones to disappear before throwing more.
In Super Mario Land, there is a similar item known as Super Flower which, though appeared similar to the Fire Flower in the main console Super Mario games, will give Mario the ability to shoot Superballs. Unlike regular Fireballs which bounce and disappeared upon killing enemies or hitting pipes and obstacles, the Superball could only be shot one at a time and instead of disappearing upon hitting obstacles, it would ricochet until it hit a target or disappear from the level. Also unlike the Fireballs, the Superball doesn't bounce normally.
In Super Mario World, the Fire Flower has a different appearance and behavior. When enemies are hit by fireballs, they are not immediately defeated but rather turned into coins. These coins must then be picked up by Mario in order for the enemies to count as being permanently defeated, otherwise the enemies will reappear at their starting positions.
In Super Mario Galaxy and Super Mario Galaxy 2, it not only allows the player to damage enemies with fireballs, but also light torches and break wooden crates. Launching a fireball is triggered by shaking the Wii Remote. Unlike previous games in the Super Mario series, Fire Mario turns back into Mario some seconds after obtaining the Fire Flower. Super Mario Galaxy also introduced a counterpart to the Fire Flower: the Ice Flower. Super Mario Galaxy is also the first game in which the Fire Flower made its first 3D appearance.
In Super Paper Mario, Fire Flowers can be used to damage all of Mario's enemies on screen. The damage inflicted depends on Mario's success with the action command.
Paper Mario: Sticker Star
In Paper Mario: Sticker Star, Fire Flowers return as Stickers. With its use, Mario dons his infamous fire suit and hurls fireballs at all enemies causing damage (except to flying enemies). There are also Shiny and Flashy Fire Flowers. Note that using Fire Flower stickers on fire-based enemies will only heal them. Fire Flower stickers also have no effect to strong shelled-enemies.
In Mario & Luigi: Partners in Time, Fire Flowers are referred to as Bros. Flowers. If used, the player attacks all the enemies with a certain amount of fireballs by constantly pressing the button if the big fireball is passed on to Mario or the button if it is passed on to Luigi. The player can also attack flying enemies by pressing the button (if passed to Mario) or the button (if passed to Luigi), making their baby counterparts shoot fireballs. In addition, the damage may burn their foes.
Mario & Luigi: Bowser's Inside Story
In Mario & Luigi: Bowser's Inside Story Fire Flowers are the Special Attack found in the Pump Works. It works almost exactly the same as the Bros. Item, Bro Flowers in Mario & Luigi: Partners in Time, it costs 4 SP. Mashes when it is Mario turn and for Luigi's, and for last if both Mario and Luigi shoot enough fireballs, they can shoot together with and .
Mario & Luigi: Dream Team
All attacks are success with enough numbers of fireballs are thrown, Mario and Luigi will throw fireballs as fast as you can.
In Mario & Luigi: Dream Team, Fire Flowers are used in the Luiginary Attack move Luiginary Flame. It is also used in the Bros. Attack of the same name that is part of Luigi's moves. In this move, both bros throw fireballs at enemies damaging them all. Press and to charge the fireball to the maximum size and damage and throw it, after enough successful fireballs are thrown, Mario and Luigi can throw as fast as you hit and .
The greater the amount of fireballs thrown, the better the ranking the player receives in the aftermath of the attack, ranging from "OK!" to "Excellent!" ratings, and if you get excellent then you can rapidly throw fireballs. The damage dealt from this attack is given a Fire attribute, and thus deals critical damage to Caccacs and Beehoss.
Mario & Luigi: Paper Jam
In Mario & Luigi: Paper Jam, Luigi will get this Bros. Attack again, but the move is more similar to the one in Mario & Luigi: Bowser's Inside Story, Press with it's Mario turn and with it is Luigi's, and with the turns ends, Mario and Luigi will throw their final charge, the fireballs are bigger and you can button mashes and to throw as much as you can.
In the Super Smash Bros. series, the player can pick up a Fire Flower to release loose, short-ranged fire out of the flower's "head", nothing like the fire in Super Mario Galaxy. Mario and Luigi retain their ability to cast fireballs, even though both characters appear without a Fire Flower power-up.