This is a ‘glitched’ any% TAS of Super Mario World 2 - Yoshi’s Island for the SNES. This run improves Deign’s previous run by a total of 205 frames (3.416 seconds), thanks to the discoveries of new tricks and strategies, and better overall optimisation.
  • Emulator used: Snes9x v1.43+ v10
  • Use WIP1 Timing (Yes)
  • Allow Left+Right / Up+Down (Yes)
  • Volume Envelope Height Reading (No)
  • Fake Mute desync workaround (No)
  • Sync samples with sound CPU (No)

Movie Information:

This movie:
  • Aims for fastest time
  • Uses death as a shortcut
  • Abuses programming errors in the game
  • Manipulates luck

New Tricks

767 (Increasing Yoshi’s average speed with slopes)

This isn’t strictly ‘new’ as it was used slightly in Deign’s run. However, this run abuses it a lot more. While running, Yoshi’s speed oscillates between 3 values: the high, the low and the average. From optimal acceleration, Yoshi ends up with a speed of 760, which is the highest attainable 'normal' speed on flat levels. Sometimes when jumping, Yoshi’s speed drops to 752, so speed should be monitored during every jump. Slopes have the odd ability to change Yoshi’s average speed (and the high and low, respectively) from anywhere between 752 and 767. This is achieved by either running onto a slope and jumping off it, or jumping on a slope and jumping off on the first frame in which Yoshi does not enter the ‘flutter’ animation for one frame (usually the 2nd frame he can jump). Different positions on a slope give different speeds, but being the highest, 767 should be aimed for. If 767 isn’t possible, the next highest value from the slope should be used.

1/1 Running:

This trick is similar to 1/1 swimming in Super Mario World, but can be abused more in this game. Constantly alternating between left and right takes the current speed Yoshi has and essentially makes it the high value of Yoshi’s oscillation. It then oscillates that speed with whatever is lower than it by 56.
Pressing left for a frame while running makes Yoshi’s speed shoot up to values in the 800s for a few frames. The game then averages out Yoshi's speed by lowering it to values in the 600s and low 700s for a few frames. However, if 1/1 is used while Yoshi’s speed is in the 800s, it takes that and oscillates it between a still relatively high value. If Yoshi has a speed of 760, he can 1/1 between 816 and 760, giving 788. If Yoshi has a speed of 767, he can 1/1 between 823 and 767, giving 795.

Other Improvements

Bowser Fight #1
This was the original reason for making this run. The new strategy involves jumping on Baby Bowser as soon as possible to quickly stun him before he is able to jump again. This allows Yoshi to ground pound the floor and damage him sooner. This saved roughly a second.
Bowser Fight #2
The 3rd shot was timed so that a perfectly timed 4th shot hits Bowser exactly as he recovers the from the 3rd shot. This meant Bowser was closer to Yoshi for the final 3 shots.
Enjoy!

mmbossman: Excellent and well thought-out improvement. Gladly accepting as an improvement to the published run.

Chaosv1: Encoding...

TASVideoAgent
They/Them
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Editor, Experienced player (729)
Joined: 6/13/2006
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Location: Massachussetts, USA
Before you puppies start whining, yes I have watched it in its entirety before submission. This is an easy vote, because of the optimizations everywhere, the new tricks, and the increased entertainment in every segment where possible. TAS partner, yes vote for you, and best of luck to future Yoshi Island runs.
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Joined: 4/16/2004
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I WILL VOTE YES ON THE CONDITION THAT YOU START WORKING ON A 100% RUN IMMEDIATELY.
Tompa
Any
Editor, Expert player (2139)
Joined: 8/15/2005
Posts: 1932
Location: Mullsjö, Sweden
Nice run indeed. I better find something for you to improve on the intro stage, just because you love it so much :D. Ye ye.
Senior Moderator
Joined: 8/4/2005
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Yes vote, and DO 100% RUN PLEASE VERY PLEASE PLEASE.
Comicalflop wrote:
Before you puppies start whining, yes I have watched it in its entirety before submission.
Before you say that, consider how much of a dick you come off as.
Warp wrote:
Edit: I think I understand now: It's my avatar, isn't it? It makes me look angry.
Editor, Experienced player (729)
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I seem to remember a good number of submissions where someone is hounded for voting yes and posting immediately after something is submitted. Let's compromise and call me noble for being the dick rather than everyone else.
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Don't worry cf, nobody thinks you are a martyr TAS is fantastic and an improvement, yes
Voted NO for NO reason
Player (39)
Joined: 7/7/2008
Posts: 871
Location: Utah
Uhhhh...can you say yes pleeeaaasse. 100% run please.
Joined: 1/27/2008
Posts: 236
Location: Somewhere
Nice suprise, yes vote!
See Youtube page (GIRfanaticTAS) for all runs and stuff.
Joined: 5/2/2009
Posts: 656
Obligatory "yes" vote
Kyrsimys wrote:
I WILL VOTE YES ON THE CONDITION THAT YOU START WORKING ON A 100% RUN IMMEDIATELY.
moozooh wrote:
Yes vote, and DO 100% RUN PLEASE VERY PLEASE PLEASE.
Captain Forehead wrote:
Uhhhh...can you say yes pleeeaaasse. 100% run please.
Joining the crowd.
My first language is not English, so please excuse myself if I write something wrong. I'll do my best do write as cleary as I can, so cope with me here =) (ノಥ益ಥ)ノ
Joined: 6/4/2009
Posts: 893
count me in for the 100%, also could someone provide an encode ?
Skilled player (1430)
Joined: 7/15/2007
Posts: 1468
Location: Sweden
No. You all suck. Especially game and run. Yes maybe. EDIT: Actually watched the run. Voted yes. Was nice.
Agare Bagare Kopparslagare
Joined: 12/5/2007
Posts: 716
Nice run indeed. Yes vote.
Joined: 11/4/2007
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Location: Australia, Victoria
Give me an encode, and I'll happily watch this. Because going by everyone voting yes, this sounds bloody awesome.
Expert player (2448)
Joined: 12/23/2007
Posts: 822
Great movie, it seems NxCy is new here.
Recent projects: SMB warpless TAS (2018), SMB warpless walkathon (2019), SMB something never done before (2019), Extra Mario Bros. (best ending) (2020).
Skilled player (1399)
Joined: 5/31/2004
Posts: 1821
HappyLee wrote:
Great movie, it seems NxCy is new here.
No, he isn't. Very nice movie btw :)
xPi
Joined: 8/1/2008
Posts: 58
shooting down that flying guy above the top of the screen makes me laugh
adelikat
He/Him
Emulator Coder, Expert player, Site Developer, Site Owner (3581)
Joined: 11/3/2004
Posts: 4736
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Yes vote, very nice improvements. And whatever you do, do NOT do the 100% run! (Just trying to be different)
It's hard to look this good. My TAS projects
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TRT
Joined: 5/13/2009
Posts: 132
Loved everything about this run. Every part was entertaining. Also liked the subliminal things that were added, like Yoshi moving to the beat of the music and Yoshi being dirty with his tongue vs Baby Bowser. By the way, in the end, where did that Toadie come from? It made me laugh to see it get shot down. As for the 100% run, as long as it gets done in the same entertaining fashion as this run, I'm not complaining. An easy yes vote from me. I don't see why anyone would vote no for this run.
Active player (489)
Joined: 1/12/2007
Posts: 682
Yes.
Active player (497)
Joined: 11/19/2007
Posts: 128
This run has been bugging me for the last few days now... I think the final boss can be improved even more, but I'm not certain. I'll test it out tomorrow. Thanks for all the feedback so far and thanks Naohiro19 for the encode!
Joined: 4/2/2008
Posts: 103
Location: The Netherlands
TRT wrote:
By the way, in the end, where did that Toadie come from? It made me laugh to see it get shot down.
I think you always hit a Toadie when you aim far too high in that battle; it was a nice touch though :)
Skilled player (1085)
Joined: 8/26/2006
Posts: 1139
Location: United Kingdom
Very impressive. Nice optimisations and amazingly well stylised. Yes vote.
Expert player (2578)
Joined: 6/2/2009
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Location: Teresópolis - Rio de Janeiro - Brazil
Eggcellent, the other six are right, one hundred per cent please... Yes vote for sure!
I am old enough to know better, but not enough to do it.