Yellow Coin

	Yellow Coin
	Technical Constants
Coin Value	1
Tangibility Radius	1000
Draw Distance	4000
	Hitbox
Radius	100
Height	64
Down Offset	0
Found In
	All Courses; The Castle
	Related
	Red and Blue Coins

Yellow Coins are objects found in every level. When Mario interacts with a yellow coin, the coin counter increases, Mario is healed, and the coin unloads. When the coin counter reaches 100 while in one of the 15 courses, a 100 Coin Star is spawned above Mario. The amount that the coin counter increases and the amount that Mario is healed is determined by the coin's value, which is 1, 2, or 5 for yellow, red, and blue coins, respectively. Some yellow coins are spawned by Coin Spawners.

Various glitches such as cloning and Time Stop can be used to spawn and collect more coins than there are intended to be in a level.

Coin Duplication

Main article: Cloning

When Mario interacts with a coin, a flag is set which informs the coin to unload when it next updates. When the coin unloads, it marks itself as "collected" so that it does not spawn again when Mario leaves the area and returns. Using cloning or Time Stop, we can prevent the coin from updating, and thus collect it without the coin being marked as "collected". This allows us to spawn the coin again, even after collecting it, effectively duplicating the coin.

In this way it is possible to collect more than the normal number of coins in a level. In several levels, it is possible to increase the coin counter to 999. However, when using cloning by itself, each duplicated coin takes up an object slot in memory. There are only 240 object slots total, and attempting to spawn an additional object once all of them are full will cause the game to freeze.

Collecting more than 255 coins in a level will not increase your in-game high score, however. Due to how the game keeps track of the score, it actually saves mod 256 for the total collected coins.

Maximum Coins per Course

Course	Maximum Coins without coin duplication	Maximum Coins with duplication (Save-able)	Maximum Coins with duplication (within course)	Strategies
Save-able courses
Bob-omb Battlefield	146	255	999 (32767 on JP 1.0)	Breaking-Disappearing Cork Box Glitch^[1] and Ride Cancel^[2] (bob-omb cloning is possible, but limited due to object slots)^[3]
Whomp’s Fortress	141	255	999 (32767 on JP 1.0)	Breaking-Disappearing Cork Box Glitch^[4] (cork box cloning is possible, but limited due to object slots)^[5]
Jolly Roger Bay	104	104	104^[6]	No infinite coin glitches are available in this course
Cool, Cool Mountain	154	154	154^[7]	No infinite coin glitches are available in this course
Big Boo's Haunt	151	151	151^[8]	No infinite coin glitches are available in this course
Hazy Maze Cave	139	139	139^[9]	No infinite coin glitches are available in this course
Lethal Lava Land	133	133	133^[10]	No infinite coin glitches are available in this course
Shifting Sand Land	136	255	999 (32767 on JP 1.0)	Breaking-Disappearing Cork Box Glitch^[11] (bob-omb and cork box cloning is possible, but limited due to object slots)^[12]
Dire, Dire Docks	106	255	999 (32767 on JP 1.0)	Water shell cloning (going through the loading point unloads all coin clones)^[13]^[14] and cloning coin spawners^[15]
Snowman's Land	127	255	999 (32767 on JP 1.0)	Money-bag duplication^[16]^[17] and collecting a coin and enter an igloo during Time Stop on JP 1.0^[18]
Wet-Dry World	152	255	999 (32767 on JP 1.0)	Chuckya cloning^[19]^[20] (going through the loading point unloads all coin clones) and cloning coin spawners
Tall, Tall Mountain	137	255	999 (32767 on JP 1.0)	Bob-omb cloning (entering and exiting the slide unloads all coin clones)^[21]^[22] and collecting a coin and enter slide during Time Stop on JP 1.0^[23]
Tiny-Huge Island	192	255	999 (32767 on JP 1.0)	Piranha Plant glitch^[24]^[25], collecting a coin and enter a pipe/Wiggler's cave during Time Stop on JP 1.0^[26], Chuckya cloning and Ride Cancel
Tick Tock Clock	128	255	279^[27]	No other infinite coin glitches are available, apart from bob-omb cloning, so 279 coins is the maximum coins due to object slots
Rainbow Ride	146	255	290^[28]	No other infinite coin glitches are available, apart from bob-omb cloning, so 290 coins is the maximum coins due to object slots
Non-saveable courses
Tower of the Wing Cap	63	N/A	63^[29]	No infinite coin glitches are available in this course
Vanish Cap under the Moat	27	N/A	27^[30]	No infinite coin glitches are available in this course
Cavern of the Metal Cap	47	N/A	47^[31]	No infinite coin glitches are available in this course
The Princess's Secret Slide	80	N/A	80^[32]	No infinite coin glitches are available in this course
The Secret Aquarium	56	N/A	56^[33]	No infinite coin glitches are available in this course
Wing Mario over the Rainbow	56	N/A	56^[34]	No infinite coin glitches are available in this course
Bowser in the Dark World	80	N/A	999 (32767 on JP 1.0)	Whenever Bowser blows fire, there's a chance that some of the flames will spawn a yellow coin. Since he does this attack infinitely, you have the chance to collect infinite coins^[35]
Bowser in the Fire Sea	80	N/A	250^[36]	No other infinite coin glitches are available, apart from bob-omb cloning, so 250 coins is the maximum coins due to object slots (this Bowser doesn't blow fire that makes yellow coins)
Bowser in the Sky	76	N/A	999 (32767 on JP 1.0)	Same strategy as Bowser in the Dark World^[37]

References

[1] "SM64 - The 255 Coin Limit" by pannenkoek2012 (BoB 999 Coins)

[2] "Infinite Coins via Fake Shell" by bad_boot

[3] "SM64 - Bob-omb Battlefield - 255 Coins" by pannenkoek2012

[4] "SM64 - The 255 Coin Limit" by pannenkoek2012 (WF 999 Coins)

[5] "SM64 - Whomp's Fortress - 255 Coins" by pannenkoek2012

[6] "SM64 - Jolly Roger Bay - 104 Coins" by pannenkoek2012

[7] "SM64 - Cool, Cool Mountain - 154 Coins" by pannenkoek2012

[8] "SM64 - Big Boo's Haunt - 151 Coins" by pannenkoek2012

[9] "SM64 - Hazy Maze Cave - 139 Coins" by pannenkoek2012

[10] "SM64 - Lethal Lava Land - 133 Coins" by pannenkoek2012

[11] "SM64 - The 255 Coin Limit" by pannenkoek2012 (SSL 999 Coins)

[12] "SM64 - Shifting Sand Land - 255 Coins" by pannenkoek2012

[13] "SM64 - The 255 Coin Limit" by pannenkoek2012 (DDD 999 Coins)

[14] "SM64 - Dire, Dire Docks - 255 Coins" by pannenkoek2012

[15] "SM64 - Spawning Point Clone" by pannenkoek2012

[16] "SM64 - The 255 Coin Limit" by pannenkoek2012 (SL 999 Coins)

[17] "SM64 - Snowman's Land - 255 Coins" by pannenkoek2012

[18] "SM64 - SL Infinite Coins via Timestop" by Ethan White

[19] "SM64 - The 255 Coin Limit" by pannenkoek2012 (WDW 999 Coins)

[20] "SM64 - Wet-Dry World - 255 Coins" by pannenkoek2012

[21] "SM64 - The 255 Coin Limit" by pannenkoek2012 (TTM 999 Coins)

[22] "SM64 - Tall, Tall Mountain - 255 Coins" by pannenkoek2012

[23] "New Infinite Coin Glitch (JP only)" by 1ted59

[24] "SM64 - The 255 Coin Limit" by pannenkoek2012 (THI 999 Coins)

[25] "SM64 - Tiny-Huge Island - 255 Coins" by pannenkoek2012

[26] "Time Stop Infinite Coins in THI" by 1ted59

[27] "SM64 - The 255 Coin Limit" by pannenkoek2012 (TTC 279 Coins)

[28] "SM64 - The 255 Coin Limit" by pannenkoek2012 (RR 290 Coins)

[29] "SM64 - Tower of the Wing Cap - 63 Coins" by pannenkoek2012

[30] "SM64 - Vanish Cap Under the Moat - 27 Coins" by pannenkoek2012

[31] "SM64 - Cavern of the Metal Cap - 47 Coins" by pannenkoek2012

[32] "SM64 - The Princess's Secret Slide - 80 Coins" by pannenkoek2012

[33] "SM64 - The Secret Aquarium - 56 Coins" by pannenkoek2012

[34] "SM64 - Wing Mario over the Rainbow - 56 Coins" by pannenkoek2012

[35] "SM64 - Bowser in the Dark World - 999 Coins" by pannenkoek2012

[36] "SM64 - Bowser in the Fire Sea - 250 Coins" by pannenkoek2012

[37] "SM64 - Bowser in the Sky - 999 Coins" by pannenkoek2012

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