This is a TAS of FDS Super Mario Bros. 2, specifically of the letter worlds. You can play the secret letter worlds after getting 8 stars on the title screen, and you can access them by pressing A+Start on the controller at the title screen. This TAS uses the warpzones in A-2 and B-4 to reach the end of D-4 as quickly as possible, starting from A-1.
During the creation of this TAS, I investigated the possibility of big Mario being faster than small, as big Mario can perform crouch clips in B-4 and D-4, and bullet bill glitch in D-3 to save a significant amount of time. However, the small Mario TAS ended up being roughly 30 frames faster, so I went with that route instead.
I also investigated timesave in the first room of D-4, and in A-2, which is only 2 frames from the next framerule. Unfortunately, both of those possibilities came up short as well. The TAS also loses a frame on the pipe entry in the first room of D-4, to avoid an impossible Bowser pattern later in the level.
To play the movie, you must first have at least 8 stars on the title screen. You can get that via game genie codes, playing a regular warps TAS 8 times, or any other method you like.
- Finishes D-4 from A-1
- Aims for fastest time
- Abuses glitches
- Uses warpzones
Here, I lower the platform in front of the flagpole enough to clip into the ground, which allows me to perform a full flagpole glitch, skipping the flag-lowering and walking to the castle cutscenes.
In A-2, I use a corner clip to enter the warpzone faster than otherwise possible. Unlike 1-2, there are actually three ways of entering the warpzone, you can ride a rising platform, perform a walljump near the beginning to get up top early, and then you can use the corner clip seen in this TAS, which saves 2, almost 3, framerules over the walljump.
Nothing special really, just a fast acceleration and flagpole glitch, though I tried my best to make it entertaining.
A water level! I perform an underwater fast acceleration at the start, something that is only possible using L+R, and unlike in SMB1 there are actually sections where you need precise swimming and slowdowns.
Nothing special either. This level is actually where I performed the mushroom grab in the big Mario TAS, as the first mushroom can be grabbed very quickly.
The first castle level, though we never get to meet the fake Bowser it contains. I perform a wall clip partway through the level, to skip having to ride the platform below.
In this level, I abuse wind mechanics to clip into the floor, allowing me to perform the second full flagpole glitch of the run.
Nothing special, though I do show off a glitch at the end, where if you jump on the last frame Mario is on the spring, he performs a normal jump instead of a spring jump.
Some cool enemy kills near the end, but other than that, not much of note.
In the first room, I abuse firebar mechanics to allow Mario to pass through the long firebar in the first room. In the second room, I have to slow down slightly near the end to avoid being killed by the piranha plant. And in the fourth and final room, I have to clip through a wall to skip having to wait for the podoboo near Bowser to fall back down, and I also have to avoid getting a backwards Bowser, which in D-4 is always an impossible pattern without slowing down significantly.