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Mega Man 3 & 4 & 5 & 6 by Baxter & AngerFist, all beaten simultaneously with the same controller input.

Mega Man 3 & 4 & 5 & 6 by Baxter & AngerFist, all beaten simultaneously with the same controller input.

Perhaps they use simulatenous left+right but then it does not count as an achievement in my opinion.

Of course, completing an entire 'left-room' takes longer than it takes for a screen to scroll. Often, we tried to make the game that has to move left face left, while the others face right. This can for instance be done in a frame of lag at other games. When dropping down into a 'left-room', it is good to face left for a frame, right before the screen starts scrolling.

When the screen is scrolling down, the other games are able to progress to the right. After the screen is done scrolling, it is possible to move left in the left-room, and still move right in the other games, with sliding by pressing down+A. This doesn't change the direction of megaman, which makes it possible to move in different directions in different games. A nice example of this comes early in the run, when Mega Man 5 drops down in the second room of starman (the first level). It doesn't always work however. When Mega Man needs to jump in such a room, left will have to be pushed, which is why sometimes the other Mega Mans are affected. Mega Man 6 can avoid this a little, since megaman6 will move left when you press left and right at the same time. The other Mega Man games won't move, so it is easier to movie left with Mega Man 6 than with other Mega Man games. If you stop walking, Mega Man will take a few frames to get in his final standing position. During these frames, it's also sometimes possible to press left without changing megamans direction.

This short time it takes for Mega Man to position himself after running was also used in other occasions. For example when one of the games has to jump to the left, and it was possible to keep another Mega Man which didn't need to move to the left on the ground. If pressing left is skipped for a frame, the Mega Man on the ground will position himself for like ten frames, so he won't move to the left. The Mega Man who is moving to the left will only stop moving for one frame since he is on the air. It was also used at instances where Mega Man had to move on a rushjet to the left, and a lot when multiple boss battles where going on at the same time.

Why?

Uh, what?

Left+right or up+down is impossible to do on a NES controller, thus using such a combination to trick a game into doing something is cheating.

Left+right or up+down is impossible to do on a NES controller, thus using such a combination to trick a game into doing something is cheating.

TAS videos are not generally concerned about the mechanical limitations of the default controller of the system.

(What if there's a 3rd party controller that allows you to press both direction simultaneously? Does it make it legit?)

The game apparently is going to be a "legally redistributable NES ROM file", that "can be completed in under 6 minutes". I wonder what homebrew game this'll be.

I've recently acquired such a controller called The Game Handler, and I've confirmed it can press all directions in any combination.

It seems strange to disqualify it as an achievement based on an arbitrary rule like that. It's also downright ignorant to question the authenticity of the video based on watching 30 seconds of it and not being able to explain what is happening.

Well, no. I dislike false advertising, and I was expecting to see 4 megamans doing the same thing in different levels. What I see instead is one megaman running left, the other running right, and another climbing a latter. It just looks like 4 normal videos side to side to me. Not interesting, I am disappointed and I quit. I see nothing "downright ignorant" about that.

Left+right or up+down is impossible to do on a NES controller, thus using such a combination to trick a game into doing something is cheating.

Well, no. I dislike false advertising

Everything about a TAS is impossible to do on a real console

(OT, but I wonder if the discoloration in the footage from Immortal shown in the video is caused by it using $0D color for black. To be clear, I know the game uses $0D, the question is whether that caused the color artifacts in the capture.)

Impossible for a human to do...

Everything about a TAS is impossible to do on a real console

I was expecting to see 4 megamans doing the same thing in different levels. What I see instead is one megaman running left, the other running right, and another climbing a latter.

This, I don't think anybody has yet checked any TAS against real hardware

Yeah, I'm pretty sure there are TAS setups that run directly on console hardware.

AFAIK, they bypass the actual controllers and feed data directly into the controller ports, so they're free to press opposite directions, unlike is the case of the common setup.

I know, I'm just saying that to a human viewer, TASes do a lot of crazy stuff that seem impossible, sometimes including pressing opposite directions, and showing them running on real hardware doesn't make them look more authentic, specially when it comes to pressing opposite directions since these setups bypass the controllers altogether.

I'm not saying they aren't authentic, they obviously are, it's just that this is not an easily observable fact, just like it's nearly impossible to tell that all 4 Mega Man games are being played with the same input.

Personally if I was doing it I would try not to use L+R, but I wouldn't do it at all because it's a tremendous amount of hard work.