From the Super Mario Wiki
1-Up Mushrooms are green Mushrooms that give whoever eats one an Extra Life, and are usually the rarest to be found. Though rare, they can still be found in almost every game a Super Mushroom has appeared in, and even some it has not. 1-Up Mushrooms are usually found in hidden blocks or in risky places for the player. They always grant the player a positive effect when acquired. The 1-Up Mushrooms were the first extra life-granting items in video game history.
Super Mario series
Super Mario Bros.
The 1-Up Mushrooms first appear in Super Mario Bros.. In the side-scrolling games, they move exactly like normal Mushrooms, but have a different color scheme. They are usually found in hidden blocks or in risky places where Mario must risk his life to acquire one. They are rather uncommon in this game. In World 1 of Super Mario Bros., there are two hidden 1-Up Mushrooms, most likely more than Mario can find than any other world in the game. When ten lives are earned, the life counter will display a crown next to the number, as a reward for earning a high amount of lives.
Super Mario Bros.: The Lost Levels
The 1-Up Mushroom, along with the Super Mushroom, reappears in Super Mario Bros.: The Lost Levels. Due to this game being a direct sequel with very few graphic changes, nothing changed over the behavior of the 1-Up Mushroom, though like the Super Mushroom and the newly introduced Poison Mushroom, these mushrooms now have eyes, which continue to be present in almost every installment afterwards.
Super Mario Bros. 2
While 1-Up Mushrooms are present in Super Mario Bros. 2, the Subcon versions look very different from the usual green-capped mushrooms. Found by pulling up a plant containing one or throwing three items at a bubble containing a 1-UP (in Super Mario Advance only), they have a solid red cap with "1 UP" written on their side. As usual, they grant an extra life.
Super Mario Bros. 3
1-Up Mushrooms reappear once again as rare mushrooms that can be found in hidden blocks or in risky places in Super Mario Bros. 3. Other than an appearance change (they have green spots on a white cap), nothing much change with these mushrooms. In World 6-3, a pure white 1-Up Mushroom can be found. In the NES version, the highest number of lives obtainable is 100. In the SNES version, the highest number of lives obtainable is 99. And in the Game Boy Advance version, the highest number of lives obtainable is 999.
Super Mario World
In Super Mario World, 1-Up Mushrooms behave as they do in Super Mario Bros. 3, but can be found in a more varied range of places. Fishin' Lakitus carry them as bait for Mario, and when Mario acquires it, the Lakitu will chase after Mario, throwing Spinies after him. 1-Up Mushrooms also appear out of eggs when Mario is already riding a Yoshi and hits a ? Block containing an egg.
There is another item in Super Mario World that can grant Mario lives — the 3-Up Moon gives Mario three extra lives instead of one, but is even rarer than the 1-Up Mushroom and is only found in hidden areas, such as behind the Giant Gate in some levels.
A flying winged golden 1-Up Mushroom exists unused in this game.
Super Mario 64/Super Mario 64 DS
Appearing differently from Super Mario World's design, 1-Up Mushrooms in this game are green with lighter green spots. They are also the only Mushrooms that can be obtained in Super Mario 64. They can be found in a number of places, such as going through a ring of coins or collecting a ring of coins. 1-Up Mushrooms are also found in hidden areas or on top of poles. Most will seemingly slide away from Mario while others follow Mario until he gets a life. A 1-Up Mushroom can also be found in the room with the Jolly Roger Bay painting in it. They are not the only way to gain a life. Every fifty coins Mario collects also grant a life when he completes the level. The maximum number of lives a player can have is 101. It is important to note that the player will lose all obtained 1-Up mushrooms if they save and quit. Upon selecting their file, they will always only have five lives regardless of how many they had before quitting previously.
In Super Mario 64 DS they are the most common Mushroom. Super Mushrooms are also thrown in with these mushrooms. Also, three 1-Up Mushrooms can be found at the top of Peach's Castle if the player uses the cannon to reach there. In some stages, some 1-Up Mushrooms may appear in a small field of flowers. Other appear in some ? Blocks in some missions.
Super Mario Sunshine
1-Up Mushrooms reappear in Super Mario Sunshine. They look like 1-Up Mushrooms from Super Mario 64. They are the only type of Mushroom that can be acquired in this game. Aside from gaining an extra life, Mario's Health Meter and F.L.U.D.D.'s water tank will also be completely refilled upon collection. Some 1-Up Mushrooms try to escape from Mario being caught after found. The highest number of lives obtainable is 100. In Super Mario 64, the player lost all obtained 1-Up mushrooms upon saving and quitting on their file, and would only have five lives upon selecting their file. However, in Super Mario Sunshine the number of obtained 1-Ups is saved to the file and the player will retain the same number of lives upon returning to their file.
New Super Mario Bros.
Little has changed in the behavior of these mushrooms in New Super Mario Bros. when compared to Super Mario Bros.. However, they can be obtained by growing mega, caused by a Mega Mushroom and destroying a certain number of objects in the player's path. When this action is completed, 1-Up Mushrooms will fall from the sky, depending on the amount the meter of the objects destroyed in the top of the screen is filled up. The easiest way to fill the meter up is by allowing Mario or Luigi to run over the flagpole, completely filling up the meter.
Toad Houses are also scattered around the landscape. Some of these are 1-Up Toad Houses. Here, Mario or Luigi must hit blocks with 1-Up cards in them, randomized. A Bowser Card is mixed with these cards. If the player hits a Bowser Card, the game ends, but the lives acquired by the blocks will be received.
Super Mario Galaxy
1-Up Mushrooms act very similar in Super Mario Galaxy and Super Mario Galaxy 2 when compared to the games in the past. However, they are found in other places such as the bottom of planets or next to Black Holes. When the player also touches all Rainbow Notes activated by a ? Coin, a 1-Up Mushroom will often appear. Lives can also be obtained by collecting fifty coins or by collecting fifty Star Bits. It is also possible for the player to get a 1-Up mushroom from Lumalee for thirty star bits. Five 1-Up Mushrooms can be found on the Comet Observatory. When Mario receives a letter from Princess Peach via the Mail Toad, five 1-Up Mushrooms will be included with the letter. When playing as Luigi, twenty 1-Ups will be included instead of five. Like in Super Mario 64 and its remake, the player will lose all obtained 1-Up mushrooms if they save and quit, and will always only have five lives upon selecting their file regardless of how many they had before quitting previously, just like in the previous games. The maximum number of extra lives that a player can have is one hundred.
New Super Mario Bros. Wii
1-Up Mushrooms act in a very similar manner in New Super Mario Bros. Wii when compared to New Super Mario Bros.. The 1-Up Toad Houses each have a minigame entitled 1-Up Blast. In this game, the player must hop into cannons. The player can aim the cannon at balloons with numbers on them, ranging from one to four. If the player pops these balloons, the number of lives shown on them will be received.
A visual effect will occur only to Mario if he collects 99 lives. Mario will lose his cap, and the only way he can get it back is to lose a life.
Super Mario Galaxy 2
1-Up Mushrooms also appear in Super Mario Galaxy's sequel, Super Mario Galaxy 2. They have the same benefit like in the predecessor — each mushroom gives Mario an extra life. The Rainbow Notes that Mario collect often make 1-Up Mushrooms appear, usually three. In galaxies or certain bonus areas, some ? Coins usually make coins appear. If Mario collects all the coins before they disappear, he will receive an extra life. Mario can also obtain 1-Up Mushrooms from Lumalee, on Starship Mario, or from Chance Cubes, with some Chance Cubes having the chance of rewarding up to five 1-Up Mushrooms. Collecting every 100 Star Bits or bringing back 100 coins to Starship Mario will also give Mario an extra life.
Super Mario 3D Land
1-Up Mushrooms return in Super Mario 3D Land, which work like any other Mario game. The crown reward also makes a comeback now appearing when the player reaches 1,001 lives. First, a crown is displayed, then if the player reaches 1,101 lives, two crowns are displayed, and if the player reaches the maximum of 1,111 lives, three crowns are displayed and Mario loses his cap (but Small Mario gains it) just like in New Super Mario Bros. Wii.
New Super Mario Bros. 2
1-Up Mushrooms also appear in New Super Mario Bros. 2. Like in most Mario games, Mario will get an extra life for collecting 100 coins. The maximum of lives Mario can get are 1,110 lives (equaling three crowns), the same maximum lives in Super Mario 3D Land. They are replaced by Gold Mushrooms in the Coin Rush mode. Just like New Super Mario Bros. Wii, he can also lose his cap when he gets all 1,110 lives.
New Super Mario Bros. U
1-Up Mushrooms also reappear in New Super Mario Bros. U. Once again, it gives the player an extra life. Like in New Super Mario Bros. Wii, the player can obtain a maximum of 99 lives.
Super Mario 3D World
In Super Mario 3D World, 1-Up Mushrooms appear once again and retain their effects from previous games. Like in Super Mario 3D Land, three crowns are displayed upon reaching the maximum number of lives at 1,111. One player will be six lives, two players will be 11 lives, three players will be 16 lives, and four players will be 21 lives.
Captain Toad: Treasure Tracker
1-Up Mushrooms also reappear in Captain Toad: Treasure Tracker. The highest number of lives obtainable is 100.
Mario & Luigi series
In Mario & Luigi series, the 1-Up Mushroom revives Mario and Luigi with half of their HP if either Mario or Luigi lose all of their HP in battle.
There is also a stronger variant called a 1-Up Super that appear in Mario & Luigi: Superstar Saga and Mario & Luigi: Partners in Time. They are very expensive and are named after the 1-Up Mushroom and the Super Mushroom. When used, it restores all HP (and BP in Mario & Luigi: Superstar Saga) to a fainted Mario brother, whereas the normal 1-Up Mushroom only revives them with half of their maximum HP. It is known as the 1-Up Deluxe in Mario & Luigi: Bowser's Inside Story and Mario & Luigi: Dream Team. Unlike the first game's 1-Up Supers, Mario & Luigi: Bowser's Inside Story's 1-Up Deluxes do not restore SP, the equivalent of BP in the first and fourth game of the series.
Mario & Luigi: Paper Jam 1-Up Mushrooms reappear in Mario & Luigi: Paper Jam and they function the same as they do in the previous games. 1-Up Supers also reappears in this game and do a even paper of the two firsts previous games and the 1-Up Deluxes also reappears with a even papers how in the two last previous games.
Mario Kart series
In Mario Kart Double Dash!!, a 1-Up Mushroom appears as an emblem in the front of Toadette's Kart. This kart is supposed to be a recolor of the Toad Kart, which is blue and sports a regular Mushroom as an emblem. The 1-Up Mushroom does not appear as Toadette's emblem in later games, however. A 1-Up Mushroom represents the Mushroom Bridge track logo as well.
Mario Baseball series
The 1-Up Mushroom only appears in Mario Superstar Baseball as an item that can be obtained through a slot in Toy Field. When the player acquires a 1-Up Mushroom, they can bat again, regardless if the fielders caught it or not.
Mario Tennis Open
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