Today, I would like to ask three individuals who were in charge of the development of Mario Kart Wii. Many Mario Kart games have been released over the years, and this will be the sixth game in the series. Super Mario Kart¹, which was the first in the series, went on sale 16 years ago, back in 1992. At the time, even though I was so busy at HAL Laboratory with my work that I could barely go home, I remember on the day the game was released, I went to the store and purchased a copy, and then making time so I could play. Let’s begin with a self-introduction by Konno-san.

1.	Super Mario Kart: The first game in the Mario Kart series. Released in North America on September of 1992 for the Super Nintendo Entertainment System.

Hi, I’m Konno from the Entertainment Analysis and Development Division’s Software Development Department. I was worked as producer on Mario Kart Wii.

Konno-san has been developing games since the days of the original NES, but this is his first time to appear in Iwata Asks.

I’m pretty nervous. (laughs)

It’s hard to believe that you haven’t appeared here before. And then there’s Ashida-san. You appeared last time in the Wii hardware session of the Iwata Asks interviews.

Right, I’m Ashida from the Product Development Department of the Integrated Research and Development Division. I was the project leader for the Wii Wheel^TM.

Miyamoto-san is also here.

Um…my name isn’t on the credits for this one, but is it all right if I join in?

(laughs)

Aren’t you listed at the very top as General Producer?

When I’m listed as General Producer, it usually means I hardly even opened my mouth to have a say on what went on during the development process. But this time I gave little inputs regarding new aspects of play such as the Wii Wheel and battles over the Nintendo Wi-Fi connection.

Your inputs sure didn’t sound like it was "little", though! (laughs)

Konno-san, how long have you been involved with the Mario Kart series?

Ever since the first game. I worked on the three games for the Super NES, Nintendo 64 and Nintendo DS.

So you didn’t work on the games for the Game Boy Advance and the Nintendo GameCube?

I was around to give advice, but for the most part was not involved in the actual development.

What kind of a position did you hold during development of the first game?

I worked on it as director along with one other staff member.

When the first game was released for the Super NES, it gave me quite an impact. Like I said earlier, even though I shouldn’t have been playing video games at that time, I ran out to buy one the day it came out! (laughs)

Thanks for buying one.

During the early days of the NES, staff members within Nintendo associated HAL Laboratory with cutting-edge technology and thought of Nintendo as developing its products steadily but surely. But from around the time before we released the Super NES, a lot of brilliant programmers came in to Nintendo and we were able to make games like F-Zero² on our own.

At HAL Laboratory, we dropped everything to compete in the time trials when F-Zero came out, too. It may be because I was once in charge of developing "F1 Race" (a Formula 1 game) in HAL Laboratory, that I was attracted to these kinds of games.

2.	F-Zero: A racing game set in the near future. Released in North America on August of 1991, simultaneously with the Super NES.

Iwata-san, did you buy that game and Mario Kart on the release date to check the code? (laughs)

(laughs)

Originally, the development of Super Mario Kart began with the idea of creating a two-player racing game in contrast to the single-person gameplay of F-Zero.

Just so there’s no confusion, however, I should point out that we didn’t set out to create a two-player version of F-Zero. We set out to make a game where we could display the game screen for two players at the same time.

With more than one player, it would have been impossible to illustrate the high speeds of F-Zero.

Why did you decide on using Mario?

Well, in the very first prototype, there was a guy in overalls sitting in the kart.

Wait just a minute! I can’t let that slip by. Did you just say a guy in overalls?

Sounds like Mario, doesn’t it? It wasn’t like I forgot to put Mario’s beard on him or something, though… (laughs)

For F-Zero the characters were seven heads tall, but for Super Mario Kart, we decided on three heads tall characters in order to suit the design of the karts.

How long was it before Mario himself actually appeared in the karts?

It was about three to four months after we started development, when we had created a prototype involving two karts racing simultaneously.

At first, no racing was involved. It was just two karts moving around freely. Then we noticed that it looked neat if you stopped one car and looked at the other car flying by. We decided to see what it would look like with Mario in one of the karts, and everyone thought that looked even better. Who knows, maybe the designer who drew the overalls on the earlier guy intended that it be changed to Mario all along! (laughs)

Back then, instead of a banana peel as an item, there were little oil cans. If you threw one out, the oil would spill, sending the karts spinning.

How did you come to make the race and battle modes?

We had decided from the start that there would be races, but we thought that it would be good if the game served as a communication tool in which one-on-one battles were possible via some other kind of gameplay rather than simply competing for rank, and someone had the idea of popping each other’s balloons.

Super Mario Kart was being played by people all over the world. When the time came to make a sequel for the Nintendo 64, what did you have in mind?

While we were working on Mario Kart 64³, Miyamoto-san was busy next door working on Super Mario 64⁴. Like their team, we were hoping to get our game ready for simultaneous release with the game console, but...

3.	Mario Kart 64: The second game in the series. Released in North America on February 1997 for the Nintendo 64.
4.	Super Mario 64: A 3-D action game released in North America on September 1996 simultaneously with the Nintendo 64 game console.

But Miyamoto-san left you stranded because he was immersed in Super Mario 64?

Right! (laughs)

Did he also take your staff and put them on the Mario 64 team?

He sure did! (laughs)

Did I do that? (laughs)

So we enlisted support from other departments and continued development. The biggest difference from the Super NES game was the 3-D graphics. At the time, I didn’t know much about 3-D imaging, so I had a very hard time.

The software design was incredibly practical, wasn’t it? The tracks are in 3-D, but the characters were drawn on boards...

To tell the truth, putting the characters in 3-D isn’t, strictly speaking, impossible, but it slows down the game, and eight characters won’t be able to race all at once. So we first drew images from various angles to be able to show the karts from various angles. Then we put them on boards so they could be animated.

The method using the boards are technically known as billboarding. In Super Mario 64, there’s a black ball that appears. That, too, was drawn on a flat board, but no matter which angle you view it from, it always faces the player, so it looks like a sphere. The Bob-ombs and Wigglers were all drawn on these flat billboards. That’s why they look shinier compared to Mario, which was drawn in 3-D polygons.

Back in the days of the Nintendo 64, there were restrictions on the amount of available memory, so billboarding was a good idea to save more memory and be economical. (laughs)

Necessity is the mother of invention. I love solving things like that. Because there wasn’t enough memory, thinking of an economical way to make the movements look right was like solving a puzzle, and I had a lot of fun.

The four-player battles in Mario Kart 64 were also made possible with billboarding.

At the time, I was more envious of your creativity than admiring it. When the Nintendo 64 came out, Miyamoto-san said that even though the gaming world was heading towards online gaming, before those days would come, we should make games that could be played face-to-face with four of your friends, and the first four-player game, Mario Kart 64 was released.