Update: Re-recorded 8-4 with an improvement of one more coin found by andrewg, along with 1-3 and 1-4 and a few minor adjustments. (Watch or download the encode for the previous version if you like.)

One day Mario got bored defeating the old lame Bowser and rescuing the same princess so many times, so he started challenging himself by wondering: how many coins could be gotten in one life only? In the end, Mario and the princess lived richly and happily ever after. Unfortunately, in the end, the princess took away all the money he had collected for 26 minutes and 10 seconds, and was immediately kidnapped again.

Unlike other SMB TASes that basically run through the whole stages, here you can see Mario slowing down for coins very often, which presents more actions. If you're merely thinking of something like a fuller-scaled warpless run with Mario getting all the coins he can see, you'd be surprised, for it's actually NOT warpless, and Mario has skipped a few coins on his way according to the strategy.

1. How many coins are there in SMB?
Counting each coin bricks as 16 coins (the best you can get, although not possible in every condition), and searching through every routes found on the map, we may find 1225 coins in total.

2. How many have you got?
We've managed to get 1431 coins, in one life only.

3. How is that possible?
We've created our own routes using loops.

We've applied the most advanced SMB techniques to this run, including most of the glitches shown in previous SMB TASes. Here are something more:

We all know in SMB there are natural loops inside mazes like 4-4, 7-4 and 8-4, but we've also found 2 places where you can travel back to where you've been before through pipes as many times as you want, one in 4-2, and the other in 6-2. The principle of it is similar to the Wrong Warp glitch in 4-2 of the any% run, a pipe will lead you to the previous exit if the new entry point hasn't been loaded from the screen. It's likely that the designers who placed those entry points weren't aware that we can manipulate Mario's screen X position to the right side of the screen to alter the exits of some pipes, leaving a few loopholes we can use.

In 4-2, the Warp Zone information won't be loaded until the point where the screen stops scrolling, therefore, as long as the Warp Zone's text isn't shown, Mario can return to his starting point through any of those 3 empty pipes. The quickest way of moving Mario to the right side of the screen here is to continually bump into the stairs, and the previous fall to get 2 coins underneath also matters a lot as it saves a bump and about 4 frames each time. The strategy in the Warp Zone stage brings us 19 coins every 23 in-game seconds, which far surpasses the number of coins from the rest of 4-2, 4-3, 4-4, and the entire world 5 all together. And because of its high performance price ratio, it's totally worthy for Mario to skip some of the coins underground in exchange of more loops from the Coin Heaven.

In 6-2, manipulating screen X position for the loop is pretty extreme and almost impossible. We have to make the best of everything we can use to push Mario further to the right: the first 3 pipes, the left and right side of the bricks, the edge and the corner of the entrance pipe, everything. Because there are only 26 coins within a loop of 36 in-game seconds, which are much less compared to the Coin Heaven's route or the underwater route plus another secret coin room's route, we choose to focus on Coin Heaven and only loop for 8 times, which is the route with the most coins according to our calculation.

In 8-4, normally we can only get 19 coins from the maze, but with the improvement from andrewg, 1 in-game second can be saved from each time by entering a glitched pipe, bringing us one extra coin. However, performing a wall jump then the pipe glitch is about 2.2 seconds slower than running ahead in real time, so it's best to do as few times of the pipe glitch as possible to ensure "the maximum coins within the fastest time". Getting hit to save a time doing the pipe glitch will be one of our future improvements.

You can get a minimum of 2 coins and a maximum of 16 coins from a coin brick before it turns to a used block, as the trigger is based on the timer starting from the first hit instead of the number of coins. Due to the 21 frame rule from its internal timer, only in one third of the time in each 21-frame period is Mario able to hit 16 coins from a coin brick, so in this run, sometimes it's important to delay for certain frames before hitting the coin brick to get the first hit at the right time.

There are 2 coin bricks in 1-2 that are higher than the rest. To get the maximum number of coins from those two, Mario has to keep hitting them with the maximum jumping speed by hitting the edge of a solid object or the screen at the running speed first, jump the instance he touches the floor, and release and never push direction keys until the last jump. Even so, Mario's only able to get no more than 12 coins from each of them due to their height.

It can sometimes be very significant and useful when hitting the corner of a brick, like in the secret coin room in 3-1.

Probably due to the ghost of the penultimate Goomba in 1-1, an invisible object coming out of thin air right before the flagpole can be hit multiple times using fireballs. The principle of this odd glitch still needs further studies.

One of the most unusual glitches I've met in SMB. It only happened once in 8-4 right after getting the 1425th coin, when Mario shot the exact fireball on the exact position at the exact time, so rare that I haven't been able to reproduce it ever since. The fireball indeed hits the Piranha plant the moment it's loaded (but not shown on the screen yet) from a strange universe, but up until today I haven't figured out how it works, or whether it can be applied to other spots with other types of enemies. If it can, this glitch could be quite useful in SMB TASes once we learn how to reproduce it.

And some minor glitches mentioned below, such as going through the wall on a moving lift (in 6-2); axe not disappearing (in 1-4); hitting the star inside the wall (in 1-2); fireballs and enemies disappearing in the maze (in 8-4); completing the stage on 000 (in 4-2, 6-2, 8-4, technically not a glitch though), etc.

Well, it's my first time making such an accurate TAS, and I've learnt so much through practice.

Tehh_083 mainly made through the first 3 worlds for the first version, which was the hardest time, because there weren't any comparison videos or anything to rely on except ourselves. And then Tehh_083 has disappeared ever since we finished remaking world 2.

I took part in the project since he finished 4-1 of his first version, and I remade the whole run once again from the beginning, for the latest discovery of getting 12 coins from each two coin bricks in 1-2 along with some minor improvements.

Later on, I finished some ordinary levels and did some simple calculation in 4-2 and 6-2. HappyLee offered some crucial assistance like the shortcut in 2-1, getting 3 more coins in 4-1, and the loop in 4-2 very early. I'd say he's not slow on efficiency, while the quality of his work is astonishing. Running like crazy while shooing fireballs: insane; manipulating screen X position in 4-2 and Bullet Bills in 8-2: incredible; the entertainment in 1-1 and 1-2 after his improvements: totally awesome.

By the way, thanks to KFCMario for putting forward the 21 frame rule of the coin brick first, his warped version of the maximum coins TAS, his previous idea of getting one extra coin from 4-1, and some early assistance.

At first I thought that a goal like "maximum coins" seemed greedy and pointless, but then CuteQt and Tehh_083 have proved me wrong with their excellent WIPs. Since I discovered the crazy loops in 4-2 and 6-2, I've become really fond of this project.

I officially joined the project since world 6, although previously I already had my inputs in the hardest parts of 2-1 and 4-2, and helped to come up with the strategy for 4-1. In this run, I mainly finished 6-2, 6-4's boss fight, 7-3, 7-4, 8-2 (after the springboard), 8-3 and 8-4, and after that I also redid 1-1, 1-2, 2-1's Coin Heaven for the entertainment, and made a few adjustments in 2-2, 6-3 and 8-1.

Tehh_083 did a splendid job on making and improving the first two worlds, but ever since Tehh_083 mysteriously disappeared after world 2, the pressure and the difficulty have doubled on CuteQt. This run couldn't be done without CuteQt's persistence through 3 years, yet he still argues with me seriously that his name shouldn't be placed at the top of the list. His pursuit of perfection, and his talent of mastering fireballs and playing around with enemies has really blown my mind. Together, we worked day and night (day for him, night for me), and completed world 6 to 8 within 4 weeks.

We're both pretty satisfied with this run, even though it might not be perfect, for we know that there's always room for future improvements. Thanks to people from our forum for providing the idea of making an SMB "maximum coins" TAS, and I hope you enjoy our work as well.

Edit: Special thanks to andrewg for bringing us the pipe glitch in 8-4 of which we never thought before, making 8-4 a lot crazier. Just when I was about to submit the improvement we've been working on for days, I found a more complicated strategy in 8-4 that involves getting hurt, which would save about 1.5 second. Unfortunately I'm exhausted improving 8-4 these days, and probably not going to redo the whole 8-4 again for a while, so I guess I'll leave it to our future improvements.

Guess where all the coins have gone?

HappyLee: Setting this to "cancelled" until I'm back with an improvement of 1 extra coin from 8-4 thanks to andrewg. Can't leave one coin behind!

Noxxa: Replacing the input file with a new version which is 1210 frames slower, but does collect one additional coin in 8-4.

Noxxa: Judging.

Noxxa: This is a very unique and creative run. The goal of aiming for as many coins as possible (without death abuse) ends up resulting in a lot of interesting strategies, both on a macro and a micro scale. The run is full of creative and sometimes counter-intuitive strategies like skipping a world to get more coins, looping through the 4-2 warp zone area (and other places) just to very tightly clear the stage with the timer at 0, and smaller tricks or strategies like the ways coin rooms are efficiently cleared, how with precise timing it is ensured to get the most out of each coin block, and many more things. All these strategies make the run a real pleasure to watch. The only downside of the run is that the three loops do get repetitive after some time.

Accepting to Moons as a new category.

Spikestuff: That's a lot of coins.